The rule takes effect August 31. The indicator lamp requirement, which is included in the Federal Motor Vehicle Safety Standard that governs air-braked vehicles, was originally scheduled to sunset ...

The existing indicator lamp requirement originally was scheduled to sunset on March 1, 2009, but the National Highway Traffic Safety Administration published a final rule on Aug. 25, 2009 ...

These are differentiated by different colours used for the warning or information lamps. A yellow or blue indication is to inform the driver, while a yellow warning lamp indicates a fault which ...