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This letter is in response to your May 9, 2016, email requesting clarification of the Hazardous Materials Regulations (HMR; 49 CFR Parts 171-180) applicable to agricultural shipments of hazardous materials.
We have paraphrased and answered your questions as follows:
Q1. You ask if § 173.5(a) limits the package size of shipments transported between fields.
A1. The answer is no. There are no limits to the size of the package provided all applicable provisions in § 173.5(a) are met for transportation over local roads between fields of the same farm.
Q2. You ask if § 173.5(a) limits the distance hazardous materials can be transported between fields.
A2. The answer is no. There are no limits to the distance the package can travel provided all applicable provisions in § 173.5(a) are met for transportation over local roads between fields of the same farm.
Q3. You ask if § 173.5(b) is a standalone provision and thereby does not affect the applicability of § 173.5(a).
A3. The answer is yes. Under the HMR, § 173.5(a) applies to agricultural products being transported over local roads between fields of the same farm (i.e., fields of the same farm having a local road running through them). Section 173.5(b) applies to agricultural
products being transported to and from a farm within 150 miles of the farm and within the scope of the authorized mileage. Please note, the HM-200 final rule (62 FR 1207) states “a local road does not include an interstate highway.”
I hope this information is helpful. Please contact us if we can be of further assistance.