The North American Standard Out-of-Service Criteria (OOSC) is the pass-fail criteria for inspections. The purpose of the criteria is to identify critical violations. Those violations render the driver, vehicle and/or cargo out of service until the condition(s) or defect(s) can be corrected or fixed.
The “North American Standard Out-of-Service Criteria Handbook and Pictorial” identifies critical vehicle inspection items and details the criteria that can prohibit a motor carrier or driver from operating a commercial motor vehicle for a specified period of time or until the condition is corrected.
The criteria is updated annually, effective April 1 of each year, with the release of that year’s edition of the handbook.
To help note where changes were made from the previous edition of the handbook, CVSA offers a document that outlines the most recent set of changes to the out-of-service criteria.