Effective April 1, 2008 through March 31, 2009.
The official color of the 2008 OOSC is "blue".

Please note, the only difference between the U.S. and Canadian editions of the North American Standard Out-of-Service Criteria (OOSC), is that the U.S. edition includes the Federal Motor Carrier Safety Regulation (FMCSR) violation codes as a reference.