49 CFR § 383.115 - Requirements for double/triple trailers endorsement.
---identifier: "/us/cfr/t49/s383.115"source: "ecfr"legal_status: "authoritative_unofficial"title: "49 CFR § 383.115 - Requirements for double/triple trailers endorsement."title_number: 49title_name: "Transportation"section_number: "383.115"section_name: "Requirements for double/triple trailers endorsement."chapter_name: "FEDERAL MOTOR CARRIER SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION"subchapter_number: "B"subchapter_name: "FEDERAL MOTOR CARRIER SAFETY REGULATIONS"part_number: "383"part_name: "COMMERCIAL DRIVER'S LICENSE STANDARDS; REQUIREMENTS AND PENALTIES"positive_law: falsecurrency: "2026-03-24"last_updated: "2026-03-24"format_version: "1.1.0"generator: "[email protected]"authority: "49 U.S.C. 521, 31136, 31301, and 31502; secs. 214 and 215 of Pub. L. 106-159, 113 Stat. 1748, 1766, 1767; sec. 1012(b) of Pub. L. 107-56, 115 Stat. 272, 397, sec. 4140 of Pub. L. 109-59, 119 Stat. 1144, 1746; sec. 32934 of Pub. L. 112-141, 126 Stat. 405, 830; secs. 5401 and 7208, Pub. L. 114-94, 129 Stat. 1312, 1546, 1593 (49 U.S.C. 31305(d)), sec. 23019 of Pub. L. 117-58, 135 Stat. 429, 777; and 49 CFR 1.87."regulatory_source: "52 FR 20587, June 1, 1987, unless otherwise noted."cfr_part: "383"---
Identifier
/us/cfr/t49/s383.115
Currency
2026-03-24
Positive Law
No
Updated
2026-03-24
Chapter
Federal Motor Carrier Safety Administration, Department of Transportation
Authority
49 U.S.C. 521, 31136, 31301, and 31502; secs. 214 and 215 of Pub. L. 106-159, 113 Stat. 1748, 1766, 1767; sec. 1012(b) of Pub. L. 107-56, 115 Stat. 272, 397, sec. 4140 of Pub. L. 109-59, 119 Stat. 11... 49 U.S.C. 521, 31136, 31301, and 31502; secs. 214 and 215 of Pub. L. 106-159, 113 Stat. 1748, 1766, 1767; sec. 1012(b) of Pub. L. 107-56, 115 Stat. 272, 397, sec. 4140 of Pub. L. 109-59, 119 Stat. 1144, 1746; sec. 32934 of Pub. L. 112-141, 126 Stat. 405, 830; secs. 5401 and 7208, Pub. L. 114-94, 129 Stat. 1312, 1546, 1593 (49 U.S.C. 31305(d)), sec. 23019 of Pub. L. 117-58, 135 Stat. 429, 777; and 49 CFR 1.87.
# 383.115 Requirements for double/triple trailers endorsement.In order to obtain a double/triple trailers endorsement each applicant must have knowledge covering:(a) Procedures for assembly and hookup of the units;(b) Proper placement of heaviest trailer;(c) Handling and stability characteristics including off-tracking, response to steering, sensory feedback, braking, oscillatory sway, rollover in steady turns, and yaw stability in steady turns;(d) Potential problems in traffic operations, including problems the motor vehicle creates for other motorists due to slower speeds on steep grades, longer passing times, possibility for blocking entry of other motor vehicles on freeways, splash and spray impacts, aerodynamic buffeting, view blockages, and lateral placement; and(e) Operating practices and procedures not otherwise specified.[76 FR 26890, May 9, 2011]