49 CFR 236.831a - Track, main.

Regulations last checked for updates: Feb 10, 2026

Title 49 - Transportation last revised: Feb 03, 2026

View all text of Subpart G [§ 236.700 - § 236.838]

§ 236.831a - Track, main.

A track, other than auxiliary track, extending through yards and between stations, upon which trains are operated by timetable or train orders, or both, or the use of which is governed by block signals.

authority: 49 U.S.C. 20102-20103,20107,20133,20141,20157,20301,20306,20501,20701,21301,21304; 28 U.S.C. 2461 note; and 49 CFR 1.89

source: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

cite as: 49 CFR 236.831a