Or. Admin. Code § 734-074-0045 - Weather Restrictions

(1) Movement of triple trailer combinations and the combination described in OAR 734-074-0010 (1)(h) is prohibited when road surfaces are hazardous or when wind or other conditions may cause the unit or any part thereof to swerve, to whip, to sway or fail to follow substantially in the path of the towing vehicle.
(2) Road surfaces are considered hazardous for triple trailer combinations, and the combination described in OAR 734-074-0010 (1)(h) when the surface is other than bare or wet pavement. Examples of "other than bare or wet pavement" include surfaces that have frost, ice, sleet or snow on the roadway.
(3) Movement of triple trailer combinations, and the combination described in OAR 734-074-0010 (1)(h) is prohibited when visibility is less than 500 feet due to snow, mist, rain, dust, smoke, fog or other atmospheric conditions.
(4) All other combinations of vehicles operating under permits issued under Division 74 rules must comply with the traction device requirements of OAR Chapter 740, Division 100, OAR Chapter 734, Division 17, and any other lawful order requiring the use of traction tires or devices.

Notes

Or. Admin. Code § 734-074-0045
1 OTC 6-1980, f. & ef. 3-27-80; 2HD 6-1983, f. & ef. 2-18-83; HWY 1-1993, f. & cert. ef. 3-16-93; HWY 3-1995, f. & cert. ef. 10-16-95; HWY 8-1997, f. & cert. ef. 8-26-97; HWD2-2005, f. & cert. ef. 3-18-05; HWD 4-2019, temporary amend filed 08/19/2019, effective 08/19/2019 through 02/14/2020; HWD 8-2019, amend filed 12/17/2019, effective 12/17/2019; DOD 1-2025, amend filed 03/13/2025, effective 3/13/2025

Statutory/Other Authority: ORS 184.619

Statutes/Other Implemented: ORS 818.200 & 818.220

State regulations are updated quarterly; we currently have two versions available. Below is a comparison between our most recent version and the prior quarterly release. More comparison features will be added as we have more versions to compare.