Note: For state regulations, see OD Regulations By State
A T-permit is required any time a vehicle and/or vehicle load is larger than 8'6" width, 14' height, 40' length (single unit) or 65" length (combo unit). T-Permits are issued on a single trip or annual basis, and are enforced by City police and the California Highway Patrol.
For Transportation Permit Conditions see https://www.cityofwestsacramento.org/home/showdocument?id=8091
For Single Transportation Permit Form and Truck Route Map see https://www.cityofwestsacramento.org/government/departments/public-works/engineering-and-transportation-division/transportation-section/t-permits-truck-routes