49 CFR § 387.305 - Combination vehicles.

---
identifier: "/us/cfr/t49/s387.305"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "49 CFR § 387.305 - Combination vehicles."
title_number: 49
title_name: "Transportation"
section_number: "387.305"
section_name: "Combination vehicles."
chapter_name: "FEDERAL MOTOR CARRIER SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION"
subchapter_number: "B"
subchapter_name: "FEDERAL MOTOR CARRIER SAFETY REGULATIONS"
part_number: "387"
part_name: "MINIMUM LEVELS OF FINANCIAL RESPONSIBILITY FOR MOTOR CARRIERS"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "49 U.S.C. 13101, 13301, 13906, 13908, 14701, 31138, 31139; sec. 204(a), Pub. L. 104-88, 109 Stat. 803, 941; and 49 CFR 1.87."
cfr_part: "387"
---


# 387.305 Combination vehicles.

The following combinations will be regarded as one motor vehicle for purposes of this part, (a) a tractor and trailer or semitrailer when the tractor is engaged solely in drawing the trailer or semitrailer, and (b) a truck and trailer when both together bear a single load.