Chain Requirements

By October 9, 2019Blog Posts

Many of you may know, but if not, here’s a quick refresher. As of October 1st, 2019 all CMV must carry tire chains. At FV Martin, we carry them all year round. But, if you are hooking up to a trailer or driver a truck that is not typically yours, make sure they have tire chains (and chains that fit). Especially, if you are in a different truck and heading up into the woods. If you are unaware of the chaining requirements, see below;

Commercial Vehicles with Trailers

Vehicles with a GVW rating of 26,001 pounds or more that are towing one or more trailers. Single-drive axle commercial vehicles towing a trailer must have chains on two tires on each side of the drive axle and one tire on the front axle and one tire on one of the rear axles of the trailer.
Single-drive axle commercial vehicles towing a semi-trailer must have chains on two tires on each side of the drive axle and two tires, one on each side, of any axle of the semi-trailer.
Single-drive axle commercial vehicles towing both a semi-trailer and a trailer must have chains on two tires on each side of the drive axle, two tires, one on each side, of any axle of the semi-trailer, and one tire on the front axle and one tire on one of the rear axles of the trailer.
Tandem-drive axle commercial vehicles towing a trailer must have chains on two tires on each side of the primary drive axle; or if both axles of the vehicle are powered by the drive line, one tire on each side of each drive axle. Chains must also be placed on one tire of the front axle, and one tire on one of the rear axles of the trailer.
Tandem-drive axle commercial vehicles towing a semi-trailer must have chains on two tires on each side of the primary drive axle.
If both axles of the vehicle are powered by the drive line, one tire on each side of each drive axle. Chains must also be placed on two tires, one on each side, of any axle on the semi-trailer.
Tandem-drive axle commercial vehicles towing both a semi-trailer and a trailer must have chains on two tires on each side of the primary drive axle.
If both axles of the vehicle are powered by the drive line, one tire on each side of each drive axle. Chains must also be placed on two tires, one on each side of any axle on the semi-trailer and one tire on the front axle and one tire on one of the rear axles of the trailer.
Tandem-drive axle commercial vehicles towing a semi-trailer and a semi-trailer that are connected by kingpin-to-fifth wheel assembles, commonly referred to as a “B-Train” or connected by kingpin-to-fifth wheel “C-dolly” assemblies, commonly referred to as a “C-Train”, must have chains on two tires on each side of the primary drive axle.
If both axles of the vehicle are powered by the drive line, one tire on each side of each drive axle.
Chains must also be placed on two tires, one on each side, of any axle of the semi-trailer at the B-Train or C-Train connection and on two tires, one on each side, of any axle of the rear semi-trailer.

For questions regarding chain-up requirements for commercial vehicles, contact your local ODOT Port of Entry.

Leave a Reply