SRT stands for “Static Rollover Threshold” and is the study of roll stability of vehicles. This certificate may be required for different configurations before any vehicle permits will be issued.

The Province of British Columbia requires any Service Rig with a True Tridem Drive and a Tandem Steer exceeding 15200kg have a SRT Certificate as well as all Tridem Steer, Tridem Drive Trucks. Without a SRT no permit will be issued.