Registration Information

Who Must Register

You must register if you are a person who offers for transportation or transports in commerce a shipment containing any of the following categories of hazardous materials (including hazardous wastes):

  1. A highway route controlled quantity of a Class 7 (radioactive) material, as defined in 49 CFR 173.403. A "highway route controlled quantity" may be shipped by highway, rail, air, or water.
  2. More than 25 kilograms (55 pounds) of a Division 1.1, 1.2, or 1.3 (explosive) material (see 49 CFR 173.50) in a motor vehicle, rail car, or freight container.
  3. More than one liter (1.06 quarts) per package of a "material extremely toxic by inhalation" (that is, a "material poisonous by inhalation" that meets the criteria for "hazard zone A" as specified in 49 CFR 173.116(a) for gases or 173.133(a) for liquids).
  4. A hazardous material (including hazardous wastes) in a bulk packaging having a capacity equal to or greater than 13,248 liters (3,500 gallons) for liquids or gases or more than 13.24 cubic meters (468 cubic feet) for solids. Please note that persons who offer or transport hazardous materials that do not require placarding (that is, Class 9 materials) in a bulk packaging with a capacity greater than 3,500 gallons or 468 cubic feet, must register.
  5. A shipment in other than a bulk packaging of 2,268 kilograms (5,000 pounds) gross weight or more of one class of hazardous materials (including hazardous wastes) for which placarding of a vehicle, rail car, or freight container is required for that class.
  6. A quantity of hazardous material that requires placarding.The offering and transporting of hazardous materials by farmers in direct support of their farming operations are excepted from this category of activities requiring registration. See the information on requirements for farmers below.

Since the beginning of the program in 1992, activities in Categories A through E above have required registration by law. Category F was added by regulation beginning with the 2000-2001 registration year.

Exceptions: The following are specifically excepted by statute or regulation from the registration requirements:

  1. Agencies of the federal government.
  2. Agencies of states.
  3. Agencies of political subdivisions of states.
  4. Indian tribes.
  5. Employees of those entities listed in [A], [B], [C], or [D] who offer or transport hazardous materials as part of their official duties.
  6. Hazmat employees, including the owner-operator of a motor vehicle that transports hazardous materials in commerce if that vehicle, at the time of those activities, is leased to a registered motor carrier under a 30-day or longer lease as prescribed in 49 CFR Part 376 or an equivalent contractual relationship.
  7. A person who offers hazardous materials for transportation to the United States from locations outside of the United States, when that person
    1. is domiciled outside the United States, in a country that does not impose registration or a fee on U.S. companies for offering hazardous materials into that country, and
    2. does not transport hazardous materials to, within, or from the United States in the types and quantities that require registration.
  8. A farmer who offers or transports only hazardous materials that are used in direct support of his or her farming operations and who is not engaged in activities included in Categories A through E described in "Who Must Register" above.

A farmer must register if he or she:

  1. Offers or transports hazardous materials that require placarding that are not in direct support of his or her farming operation. For example, a farmer who offers or transports home heating fuel for commercial purposes in quantities requiring placarding must register.
  2. Offers or transports for any purpose any of the hazardous materials included in Categories A through E of "Who Must Register" above. For example, a farmer who transports 55 lbs or more of a Division 1.1 explosive, even if the explosive is to be used in direct support of his farming operations, must register.

Clarifications: The HMR apply to persons who offer for transportation or transport by highway, rail, water, or air. Water transportation does not include hazardous materials loaded or carried on board a vessel without benefit of containers or labels and received and handled by the vessel carrier without mark or count. This type of shipment, for which the vessel is the container, such as LNG or oil tanker vessels, is under the authority of the U.S. Coast Guard in the Department of Homeland Security.

The term "person" means each separate legal entity, such as a corporation, partnership, association, or LLC or LP. This means that a separately incorporated subsidiary (or LLC or LP) must register if it engages in the specified activities, even when a parent company is also required to register. All locations and vehicles operated by a person are covered by that person's registration.

You must also register if you engage in any of the activities discussed in "Who Must Register" above, and you are:

  1. A merchant vessel carrier transporting, transiting, or transhipping hazardous materials within 12 miles of the U.S. coast; or
  2. A federal, state, or local government contractor.

Requirements for Hazardous Waste Generators: All hazardous wastes subject to the Hazardous Waste Manifest Requirements of the U.S. Environmental Protection Agency (EPA) are hazardous materials. A hazardous waste generator must register if you meet the requirements identified above.

Company Registration Look-up

You can search for a company's registration history by using our Company Registration Look-Up

You may enter any of the following fields. For best results, enter only one of these search elements. 

  • existing registration number
  • a company name or a distinctive part of it 
  • company's HM Company ID number
  • zip code of the company's address
  • company's USDOT Number, or FMCSA MC/MX Number (the "operating authority," formerly known as the ICC Number) 

After you click on the "Search" button, a list of possible companies will be displayed. The most recent registration number for each company is given next to the company name. Click on the "Details" button at the end of the line to see a short report of the company information with each of the registration numbers associated with that company record. The most recent registration is given at the bottom of the list. Click "View/Print" to see and print a copy of the certificate.

Current Year

The 2016-2017 Registration Year covers the period between July 1, 2016, and June 30, 2017.

Register before July 1, 2016, or before engaging in any of the activities requiring registration, whichever is later.

Background and Use of the Fee

Under the federal hazardous material transportation law (49 U.S.C. 5101 et seq.), offerors and transporters of certain types and quantities of hazardous materials, including hazardous wastes, are required to file a registration statement with the U.S. Department of Transportation and to pay an annual fee. This program began in 1992 and is administered by the Associate Administrator for Hazardous Materials Safety, Pipeline and Hazardous Materials Safety Administration (PHMSA). The registration regulations are found at 49 CFR 107.601-107.620.

The fee provides funds for grants distributed to states and Indian tribes for hazardous materials emergency response planning and training and to certain professional organizations for training purposes through the Hazardous Materials Grants Program. Your fee is helping communities prepare for hazardous materials incidents or other emergencies that may occur.

Information about the Grants Program, funded by the registration fees, is available here.

How to Register

You can register on-line or by filling out and mailing a form.

  • Click here to Register Online. Payment must be made by credit/debit card or ACH (Electronic check). A registration certificate can be printed as soon as the payment is verified (normally immediately if by credit/debit card, in one or two days if by ACH). You can register for any of the allowed registration periods. You can amend your current registration (necessary if your company name or address changes). You can look up a company's registration history by using the "Company Look-up" option.

    For specific directions for registering online, click "Online Registration Details" under Related Links to the right of this page.

  • To Register by Mail, fill out the application form (get the Registration Form or the Instruction Brochure with Form) and mail it to the Atlanta, Georgia, address printed on the second page of the form. Payment by check or credit card must accompany the form. A certificate will be mailed. You should allow four weeks for the certificate to be delivered. The Registration Form can be filled out online, printed and mailed with payment. Note that the states in item 9 must be indicated by hand after the form is printed.

    For specific directions for registering by mail, click on "Registration by Mail Details" under Related Links in the right hand column of this page.
Registration Certificates

A Hazardous Materials Certificate of Registration will be issued for each completed application.  The certificate contains the assigned Registration Number, the registration year or multi-year period covered by the registration, the date the particular copy was issued or reissued, and the expiration date.  Please note that registrations cover the period between July 1 of the first of the "Registration Year(s)" on the certificate through June 30 of the second of those years. The first six characters of the Registration Number represent the date the application was processed as mmddyy. Certificates issued after May 1, 2012, will also display an HM Company ID. Company searches in the On-Line Registration Service and through the Quick Link "Company Registration Look-Up" may be performed through this HM Company ID.

The certificates for applications submitted through our On-Line Registration Service can be printed through that service after the payment has been confirmed. An Order Confirmation with the certificate attached will also be e-mailed to the e-mail address supplied on the payment page. The On-Line Registration Service also provides means of requesting that a certificate be mailed. Certificates will automatically be mailed for applications submitted by mail.

NAICS Codes and SBA Size Standards

A list of selected North American Industry Classification System (NAICS) codes and the U.S. Small Business Administration (SBA) size standards assigned to them is provided among the topics in the right column. If your primary industry group is not included in this list, the SBA's complete list of the current size standards by NAICS code is provided on the SBA's website.

Descriptions of the types of business included in each NAICS code can be found by using the NAICS 2012 search engine at the U.S. Bureau of the Census Internet Website.

Click here to visit the SBA's Size Standards page which contains other useful information on the SBA size standards.

If you need additional assistance in determining your NAICS code or business size, call the size specialist at the local  SBA field office OR the SBA Office of Size Standards at 202-205-6618.

Additional information is provided in the definition of the term "Small Business".

Selected SBA Size Standards by NAICS Industry Codes

NOTE:   If your primary industry group does not appear below, check the SBA Internet site by clicking here for the complete listing of NAICS codes and size standards.


NAICS NAICS U.S. Industry Title Size Standards in Number of Employees OR Millions of Dollars
Sector 11 - Agriculture, Forestry, Fishing and Hunting
Subsector 115 - Support Activities for Agriculture and Forestry
115112 Soil Preparation, Planting, and Cultivating $7.5
Sector 21 - Mining, Quarrying, and Oil and Gas Extraction
Subsector 211 - Oil and Gas Extraction
211111 Crude Petroleum and Natural Gas Extraction 1,250
211112 Natural Gas Liquid Extraction 750
Subsector 213 - Support Activities for Mining
213112 Support Activities for Oil and Gas Operations $38.5
Sector 22 - Utilities
Subsector 221 - Utilities
221112 Fossil Fuel Electric Power Generation 750
221122 Electric Power Distribution 1,000
221210 Natural Gas Distribution 1,000
Sector 23 - Construction
Subsector 237 - Heavy and Civil Engineering Construction
237110 Water and Sewer Line and Related Structures Construction $36.5
237310 Highway, Street, and Bridge Construction $36.5
237990 Other Heavy and Civil Engineering Construction $36.5
  Except Dredging and Surface Cleanup Activities2 $27.52
Subsector 238 - Specialty Trade Contractors
238160 Roofing Contractors $15.0
238910 Site Preparation Contractors $15.0
238990 All Other Specialty Trade Contractors13 $15.013
Sectors 31 - 33 - Manufacturing
Subsector 322 - Paper Manufacturing
322121 Paper (except Newsprint) Mills 1,250
Subsector 323 - Printing and Related Support Activities
323111 Commercial Printing (except Screen and Books) 500
Subsector 324 - Petroleum and Coal Products Manufacturing
324110 Petroleum Refineries4 1,5004
324121 Asphalt Paving Mixture and Block Manufacturing 500
324191 Petroleum Lubricating Oil and Grease Manufacturing   750
Subsector 325 - Chemical Manufacturing
325120 Industrial Gas Manufacturing 1,000
325180 Other Basic Inorganic Chemical Manufacturing 1,000
325193 Ethyl Alcohol Manufacturing 1,000
325199 All Other Basic Organic Chemical Manufacturing 1,250
325211 Plastics Material and Resin Manufacturing 1,250
325320 Pesticide and Other Agricultural Chemical Manufacturing 1,000
325412 Pharmaceutical Preparation Manufacturing 1,250
325510 Paint and Coating Manufacturing 1,000
325520 Adhesive Manufacturing 500
325611 Soap and Other Detergent Manufacturing 1,000
325612 Polish and Other Sanitation Good Manufacturing 750
325620 Toilet Preparation Manufacturing 1,250
325998 All Other Miscellaneous Chemical Product and Preparation Manufacturing 500
Subsector 326 - Plastics and Rubber Products Manufacturing
326199 All Other Plastics Product Manufacturing 750
Subsector 331 - Primary Metal Manufacturing
331110 Iron and Steel Mills and Ferroalloy Manufacturing 1,500
Subsector 332 - Fabricated Metal Product Manufacturing
332812 Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers 500
332813 Electroplating, Plating, Polishing, Anodizing, and Coloring 500
332999 All Other Miscellaneous Fabricated Metal Product Manufacturing 750
Subsector 334 - Computer and Electronic Product Manufacturing
334412 Bare Printed Circuit Board Manufacturing 750
334413 Semiconductor and Related Device Manufacturing 1,250
Subsector 336 - Transportation Equipment Manufacturing
336390 Other Motor Vehicle Parts Manufacturing 1,000
336413 Other Aircraft Part and Auxiliary Equipment Manufacturing7 1,2507
336611 Ship Building and Repairing 1,250
Sector 42 - Wholesale Trade
Subsector 423 - Merchant Wholesalers, Durable Goods
423120 Motor Vehicle Supplies and New Parts Merchant Wholesalers 200
423830 Industrial Machinery and Equipment Merchant Wholesalers 100
423840 Industrial Supplies Merchant Wholesalers 100
423850 Service Establishment Equipment and Supplies Merchant Wholesalers 100
423990 Other Miscellaneous Durable Goods Merchant Wholesalers 100
Subsector 424 - Merchant Wholesalers, Nondurable Goods
424510 Grain and Field Bean Merchant Wholesalers 200
424690 Other Chemical and Allied Products Merchant Wholesalers 150
424710 Petroleum Bulk Stations and Terminals 200
424720 Petroleum and Petroleum Products Merchant Wholesalers (except Bulk Stations and Terminals) 200
424910 Farm Supplies Merchant Wholesalers 200
424990 Other Miscellaneous Nondurable Goods Merchant Wholesalers 100
Sectors 44 - 45 - Retail Trade
Subsector 447 - Gasoline Stations
447110 Gasoline Stations with Convenience Stores $29.5
447190 Other Gasoline Stations $15.0
Subsector 453 - Miscellaneous Store Retailers
453998 All Other Miscellaneous Store Retailers (except Tobacco Stores) $7.5
Subsector 454 - Nonstore Retailers
454310 Fuel Dealers 100
Sectors 48 - 49 - Transportation and Warehousing
Subsector 482 - Rail Transportation
482111 Line-Haul Railroads 1,500
482112 Short Line Railroads 1,500
Subsector 483 - Water Transportation
483111 Deep Sea Freight Transportation 500
Subsector 484 - Truck Transportation
484110 General Freight Trucking, Local $27.5
484121 General Freight Trucking, Long-Distance, Truckload $27.5
484122 General Freight Trucking, Long-Distance, Less than Truckload $27.5
484220 Specialized Freight (except Used Goods) Trucking, Local $27.5
484230 Specialized Freight (except Used Goods) Trucking, Long-Distance $27.5
Subsector 486 - Pipeline Transportation
486210 Pipeline Transportation of Natural Gas $27.5
486910 Pipeline Transportation of Refined Petroleum Products 1,500
Subsector 488 - Support Activities for Transportation
488210 Support Activities for Rail Transportation $15.0
488510 Freight Transportation Arrangement10 $15.010
  Except Non-Vessel Owning Common Carriers and Household Goods Forwarders $27.5
Subsector 493 - Warehousing and Storage
493110 General Warehousing and Storage $27.5
493190 Other Warehousing and Storage $27.5
Sector 53 - Real Estate and Rental and Leasing
Subsector 532 - Rental and Leasing Services
532291 Home Health Equipment Rental $32.5
Sector 54 - Professional, Scientific and Technical Services
Subsector 541 - Professional, Scientific and Technical Services
541380 Testing Laboratories $15.0
541711 Research and Development in Biotechnology11 1,00011
541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)11 1,00011
  Except, Aircraft, Aircraft Engine and Engine Parts 1,500
  Except, Other Aircraft Parts and Auxiliary Equipment 1,250
  Except, Guided Missiles and Space Vehicles, their Propulsion Units and Propulsion Parts 1,250
Sector 56 - Administrative and Support, Waste Management and Remediation Services
Subsector 561 - Administrative and Support Services
561710 Exterminating and Pest Control Services $11.0
Subsector 562 - Waste Management and Remediation Services
562112 Hazardous Waste Collection $38.5
562211 Hazardous Waste Treatment and Disposal $38.5
562910 Remediation Services $20.5
  Except Environmental Remediation Services14 75014
562998 All Other Miscellaneous Waste Management Services $7.5
Sector 61 - Educational Services
Subsector 611 - Educational Services
611310 Colleges, Universities and Professional Schools $27.5
Sector 71 - Arts, Entertainment and Recreation
Subsector 713 - Amusement, Gambling and Recreation Industries
713990 All Other Amusement and Recreation Industries $7.5
Sector 81 - Other Services
Subsector 811 - Repair and Maintenance
811310 Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance $7.5
Notes: Size standards effective 7/14/14.

1 [Reserved].

2 NAICS code 237990 - Dredging: To be considered small for purposes of Government procurement, a firm must perform at least 40 percent of the volume dredged with its own equipment or equipment owned by another small dredging concern.

3 NAICS code 311421 - For purposes of Government procurement for food canning and preserving, the standard of 1,000 employees excludes agricultural labor as defined in section 3306(k) of the Internal Revenue Code, 26 U.S.C. 3306(k).

4 NAICS code 324110 - To qualify as small for purposes of Government procurement, the petroleum refiner, including its affiliates, must be a concern that has either no more than 1,500 employees or no more than 200,000 barrels per calendar day total Operable Atmospheric Crude Oil Distillation capacity. Capacity includes all domestic and foreign affiliates, all owned or leased facilities, and all facilities under a processing agreement or an arrangement such as an exchange agreement or a throughput. To qualify under the capacity size standard, the firm, together with its affiliates, must be primarily engaged in refining crude petroleum into refined petroleum products. A firm's "primary industry" is determined in accordance with 13 CFR § 121.107.

5 NAICS code 326211 - For Government procurement, a firm is small for bidding on a contract for pneumatic tires within Census NAICS Product Classification codes 3262111 and 3262113, provided that:

  1. the value of tires within Census NAICS Product Classification codes 3262113 that it manufactured in the United States during the previous calendar year is more than 50 percent of the value of its total worldwide manufacture,
  2. the value of pneumatic tires within Census NAICS Product Classification codes 3262113 comprising its total worldwide manufacture during the preceding calendar year was less than 5 percent of the value of all such tires manufactured in the United States during that period, and
  3. the value of the principal product which it manufactured, produced, or sold worldwide during the preceding calendar year is less than 10 percent of the total value of such products manufactured or otherwise produced or sold in the United States during that period.

6 NAICS Subsectors 333, 334, 335 and 336 – For rebuilding machinery or equipment on a factory basis, or equivalent, use the NAICS code for a newly manufactured product. Concerns performing major rebuilding or overhaul activities do not necessarily have to meet the criteria for being a "manufacturer" although the activities may be classified under a manufacturing NAICS code. Ordinary repair services or preservation are not considered rebuilding.

7 NAICS code 336413 – Contracts for the rebuilding or overhaul of aircraft ground support equipment on a contract basis are classified under NAICS code 336413.

8 NAICS codes 522110, 522120, 522130, 522190, and 522210 – A financial institution's assets are determined by averaging the assets reported on its four quarterly financial statements for the preceding year. "Assets" for the purposes of this size standard means the assets defined according to the Federal Financial Institutions Examination Council 041 call report form for NAICS Codes 522110, 522120, 522190, and 522210 and the National Credit Union Administration 5300 call report form for NAICS code 522130.

9 NAICS codes 531110, 531120, 531130, and 531190 – Leasing of building space to the Federal Government by Owners: For Government procurement, a size standard of $38.5 million in gross receipts applies to the owners of building space leased to the Federal Government. The standard does not apply to an agent.

10 NAICS codes 488510, 531210, 541810, 561510, 561520 and 561920 – As measured by total revenues, but excluding funds received in trust for an unaffiliated third party, such as bookings or sales subject to commissions. The commissions received are included as revenue.

11 NAICS code 541711 and 541712

  1. "Research and Development" means laboratory or other physical research and development. It does not include economic, educational, engineering, operations, systems, or other nonphysical research; or computer programming, data processing, commercial and/or medical laboratory testing.
  2. For research and development contracts requiring the delivery of a manufactured product, the appropriate size standard is that of the manufacturing industry.
  3. For purposes of the Small Business Innovation Research (SBIR) program only, a different definition has been established by law. See section 121.701 of these regulations.
  4. "Research and Development" for guided missiles and space vehicles includes evaluations and simulation, and other services requiring thorough knowledge of complete missiles and spacecraft.

12 NAICS 561210 – Facilities Support Services:

  1. If one or more activities of Facilities Support Services as defined in paragraph (b) (below in this footnote) can be identified with a specific industry and that industry accounts for 50% or more of the value of an entire procurement, then the proper classification of the procurement is that of the specific industry, not Facilities Support Services.
  2. "Facilities Support Services" requires the performance of three or more separate activities in the areas of services or specialty trade contractors industries. If services are performed, these service activities must each be in a separate NAICS industry. If the procurement requires the use of specialty trade contractors (plumbing, painting, plastering, carpentry, etc.), all such specialty trade contractors activities are considered a single activity and classified as "Building and Property Specialty Trade Services." Since "Building and Property Specialty Trade Services" is only one activity, two additional activities of separate NAICS industries are required for a procurement to be classified as "Facilities Support Services."

13 NAICS code 238990 - Building and Property Specialty Trade Services: If a procurement requires the use of multiple specialty trade contractors (i.e., plumbing, painting, plastering, carpentry, etc.), and no specialty trade accounts for 50% or more of the value of the procurement, all such specialty trade contractors activities are considered a single activity and classified as Building and Property Specialty Trade Services.

14 NAICS 562910 - Environmental Remediation Services:

  1. For SBA assistance as a small business concern in the industry of Environmental Remediation Services, other than for Government procurement, a concern must be engaged primarily in furnishing a range of services for the remediation of a contaminated environment to an acceptable condition including, but not limited to, preliminary assessment, site inspection, testing, remedial investigation, feasibility studies, regulatory compliance, remedial design, containment, remedial action, removal of contaminated materials, nuclear remediation, storage of contaminated materials and security and site closeouts. If one of such activities accounts for 50 percent or more of a concern's total revenues, employees, or other related factors, the concern's primary industry is that of the particular industry and not the Environmental Remediation Services Industry.
  2. For purposes of classifying a Government procurement as Environmental Remediation Services, the general purpose of the procurement must be to restore or directly support the restoration of a contaminated environment. This includes activities such as preliminary assessment, site inspection, testing, remedial investigation, feasibility studies, regulatory compliance, remedial design, remediation services, containment, nuclear remediation, and removal of contaminated materials or security and site closeouts. The general purpose of the procurement need not necessarily include remedial actions. Also, the procurement must be composed of activities in three or more separate industries with separate NAICS codes or, in some instances (e.g., engineering), smaller sub-components of NAICS codes with separate and distinct size standards. These activities may include, but are not limited to, separate activities in industries such as: Heavy Construction; Special Trade Contractors; Engineering Services; Architectural Services; Management Consulting Services; Hazardous and Other Waste Collection; Remediation Services; Testing Laboratories; and Research and Development in the Physical, Engineering, and Life Sciences. If any activity in the procurement can be identified with a separate NAICS code, or component of a code with a separate distinct size standard, and that industry accounts for 50 percent or more of the value of the entire procurement, then the proper size standard is the one for that particular industry, and not the Environmental Remediation Service size standard.

16 NAICS code 611519 – Job Corps Centers. For classifying a Federal procurement, the purpose of the solicitation must be for the management and operation of a U.S. Department of Labor Job Corps Center. The activities involved include admissions activities, life skills training, educational activities, comprehensive career preparation activities, career development activities, career transition activities, as well as the management and support functions and services needed to operate and maintain the facility. For SBA assistance as a small business concern, other than for Federal Government procurements, a concern must be primarily engaged in providing the services to operate and maintain Federal Job Corps Centers.

17 NAICS code 115310 – Support Activities for Forestry – Forest Fire Suppression and Fuels Management Services are two components of Support Activities for Forestry. Forest Fire Suppression includes establishments which provide services to fight forest fires. These firms usually have fire-fighting crews and equipment. Fuels Management Services firms provide services to clear land of hazardous materials that would fuel forest fires. The treatments used by these firms may include prescribed fire, mechanical removal, establishing fuel breaks, thinning, pruning, and piling.

18 NAICS code 541519 – An Information Technology Value Added Reseller (ITVAR) provides a total solution to information technology acquisitions by providing multi-vendor hardware and software along with significant value added services. Significant value added services consist of, but are not limited to, configuration consulting and design, systems integration, installation of multi-vendor computer equipment, customization of hardware or software, training, product technical support, maintenance, and end user support. For purposes of Government procurement, an information technology procurement classified under this exception and 150- employee size standard must consist of at least 15% and not more than 50% of value added services, as measured by the total contract price. In addition, the offeror must comply with the manufacturing performance requirements, or comply with the non-manufacturer rule by supplying the products of small business concerns, unless SBA has issued a class or contract specific waiver of the non-manufacturer rule. If the contract consists of less than 15% of value added services, then it must be classified under a NAICS manufacturing industry. If the contract consists of more than 50% of value added services, then it must be classified under the NAICS industry that best describes the predominate service of the procurement.

19 NAICS Sector 92 – Small business size standards are not established for this sector. Establishments in the Public Administration sector are Federal, State, and local government agencies which administer and oversee government programs and activities that are not performed by private establishments. Concerns performing operational services for the administration of a government program are classified under the NAICS private sector industry based on the activities performed. Similarly, procurements for these types of services are classified under the NAICS private sector industry that best describes the activities to be performed. For example, if a government agency issues a procurement for law enforcement services, the requirement would be classified using one of the NAICS industry codes under NAICS industry 56161, Investigation, Guard, and Armored Car Services.


Placarding Requirements

The hazardous materials placarding requirements are found in 49 CFR Part 172, Subpart F.

The requirements are summarized as follows:

  1. Except for Division 6.2 and Class 9 materials, any quantity of a hazardous material offered for transportation or transported in a bulk packaging requires placarding.
  2. For materials offered for transportation or transported in a nonbulk packaging the quantity that requires placarding depends on whether the material is in a class or division included in Table 1 or Table 2 below:

Table 1 (Placard any quantity)

Hazard Class or Division Placard Name
1.1 .......................................................... EXPLOSIVES 1.1
1.2 .......................................................... EXPLOSIVES 1.2
1.3 .......................................................... EXPLOSIVES 1.3
2.3 .......................................................... POISON GAS
4.3 .......................................................... DANGEROUS WHEN WET
5.2 (Organic peroxide, Type B, liquid or 
        solid, temperature controlled) ...........
6.1 (Materials Poisonous by Inhalation) ....... POISON INHALATION HAZARD
7    (Radioactive Yellow III label only) ..... RADIOACTIVE

Table 2 (Placard when the aggregate gross weight of hazardous materials is 1,001 pounds or more)

Hazard Class or Division Placard Name
1.4 .......................................................... EXPLOSIVES 1.4
1.5 .......................................................... EXPLOSIVES 1.5
1.6 .......................................................... EXPLOSIVES 1.6
2.1 .......................................................... FLAMMABLE GAS
2.2 .......................................................... NON-FLAMMABLE GAS
3    .......................................................... FLAMMABLE
Combustible Liquid .................................. COMBUSTIBLE
4.1 .......................................................... FLAMMABLE SOLID
4.2 .......................................................... SPONTANEOUSLY COMBUSTIBLE
5.1 .......................................................... OXIDIZER
5.2 (Other than organic peroxide, Type B,
        liquid or solid, temperature
        controlled) .......................................
6.1 (Other than material poisonous by
       inhalation) .............................
6.2 (Infectious substance) ........................ NONE
8    .......................................................... CORROSIVE
9    .......................................................... CLASS 9 (placard not required for 
                 domestic transportation)
ORM-D ................................................. NONE

Note: The following materials are excepted from the placarding requirements: infectious substances; hazardous materials classed as ORM-D; hazardous materials authorized to be offered for transportation as Limited Quantities when identified as such on shipping papers; hazardous materials prepared in accordance with 49 CFR 173.13; hazardous materials which are packaged as small quantities under the provisions of 49 CFR 173.4; combustible liquids in non-bulk packagings (see 49 CFR 172.500(b)); and materials offered or transported under the "materials of trade" exception (see 49 CFR 173.6).

Hazardous Materials Regulations (HMR)

A link to the HMR section of the Government Printing Office's Electronic Code of Federal Regulations is provided here. The registration regulations are found at 49 CFR 107.601 - 620; the definitions provided in the HMR are at 49 CFR 171.8; and the placarding requirements begin at 49 CFR 172.500.

Other Requirements

Registration Deadline

The completed 2016-2017 (or 2016-2018 or 2016-2019) registration statement and payment must be submitted before July 1, 2016, or before engaging in any of the activities requiring registration, whichever is later.

Recordkeeping Requirements

Copies of the registration statement and the certificate of registration must be kept for three years at your principal place of business and must be available for inspection. Motor carriers and vessel operators must also have on board a copy of the current certificate of registration, or another document bearing the current year's registration number identified as the "U.S. DOT Hazmat Reg. No." Every truck or truck tractor or vessel you use for the transportation of a hazardous material that meets the registration criteria must have this proof of registration on board.

If You Have Failed To Register For Past Years

Companies that failed to register for previous years in which they engaged in activities that required registration must register for those years and pay the appropriate fee.

If you engaged in any of the hazardous materials activities in categories A through E in registration years before 2000-2001, or if you engaged in any of the activities in categories A through F in registration years 2000-2001 through 2015-2016, but did not register, you must do so now. A complete table of possible periods and the appropriate fees is available.

Penalties For Failure To Register

The requirement to register with DOT is based on a federal law. The enforcement of this requirement is conducted cooperatively by federal, state, and local agencies. Federal, state, or local officials may impose penalties for failing to register or failing to meet the recordkeeping requirements.

Related Programs

FMCSA Hazardous Materials Safety Permits

Highway carriers of certain types of hazardous materials are required to obtain a Hazardous Materials Safety Permit from the Federal Motor Carrier Safety Administration (FMCSA). Some (but not all) of the activities that require a highway carrier to register with PHMSA also require the carrier to obtain a safety permit from FMCSA. All companies that are required to have an FMCSA Safety Permit are required to have a PHMSA Registration. Some highway carriers will need only a PHMSA registration. For further information on the FMCSA Hazardous Materials Safety Permit requirements, click here. A printable brochure is available here.

State Registrations

Some states have hazardous materials registration or permitting programs that may also apply to you. Registration with PHMSA does not replace state requirements.

Hazardous Materials Security Plans

Companies that are required to register may also be required to have written security plans that include a risk assessment and measures to address personnel security, unauthorized access, and en route security. Companies that are required to have security plans must also provide security training to all hazmat employees. This training is one element of the training required for all hazmat employees in 49 CFR 172.704. For further information, visit the Hazmat Security Internet site.

Hazardous Materials Incident Reports

A person in possession of hazardous materials at the time of an incident during transportation which results in serious consequences must immediately report the incident (see 49 CFR 171.15).  These incidents and others require the filing of a detailed incident report within 30 days of the incident (see 49 CFR 171.16).  The detailed incident report may be filed electronically here.


To verify or obtain a USDOT number or MC/MX number ("operating authority," formerly known as the ICC Number), visit the Federal Motor Carrier Safety Administrations Internet SAFER System site by clicking here.

Sources of Information

For Copies of this Brochure and Registration Forms

Download copies from the PHMSA Registration Internet Home Page at

Email your request to

Call 202-366-4109 or  800-942-6990.

For Questions About the Hazardous Materials Regulations including Registration

Call the Hazardous Materials Information Center at 1-800-467-4922.

E-mail your question to

For Questions About the SBA Size Standards

See the complete listing of size standards by NAICS code on the SBA website.

SBA Size Standards Internet site.

Call the Size Specialist at the local SBA field office or the SBA Office of Size Standards at 202-205-6618. 

For Information on NAICS 2012 Codes

See the U.S. Bureau of the Census site at

For Information on the Grants Program

Visit the Hazardous Materials Grants site at

Call the Grants Program office at 202-366-1109, or e-mail to

For the Status of your Registration Submission

Call 202-366-4109.

Registering Through the Internet

Register through the internet at

If you need assistance or encounter problems with the internet registration process, call 202-366-4109 or 202-366-4484, and ask for internet registration support.

Electronic Version of the Hazardous Materials Program Regulations

Access the HMR sections of the Code of Federal Regulations.

To Obtain a U.S. DOT or MC/MX Number

Call the local Federal Motor Carrier Safety Administration's (FMCSA) office (usually in your state capitol). See the list of FMCSA field offices at

The application for a US DOT or MC/MX number can be filed electronically at Select "FMCSA Registration & Updates" under "FMCSA Services." USDOT and MC/MX numbers can be verified at that same site by selecting "Company Snapshot" under "FMCSA Searches".

For Information on the FMCSA Hazardous Materials Safety Permit Requirements

Visit the FMCSA Hazardous Materials Safety Permits site at A printable brochure is available at

For information on the Hazardous Materials Security Plan Requirements

Visit the Hazardous Materials Transportation Security site at

Recent Registration Rulemaking Activity