See also:

Reporting safety defects in the U.S.
If you believe that your vehicle has a defect which could cause a crash or could cause injury or death, you should immediately inform the National Highway Traffic Safety Administration (NHTS ...

Indicator, information, and warning symbols
Indicator and warning symbols 1 High beam and turn signal indicators 2 Indicator and warning symbols 3 Information symbols 4 Indicator and warning symbols ...

Turn signal indicator – trailer (certainmodels)
If you are towing a trailer, this light will flash simultaneously with the turn signals on the trailer. If the light does not flash when signaling, neither the trailer's turn signals nor the ve ...