Definition of backup light in English:
A light at the rear of a vehicle that comes on when the vehicle is in reverse gear.
- The stacked taillamps are vertical in orientation; there is a clear acrylic and polycarbonate lens covering three individual lamps: the top is a clear backup light; the middle is an amber turn signal; the bottom is the red stop lamp.
- The white backup light will likely remain separate to keep cost and complexity in check.
- It was extremely dark and if it wasn't for the little light coming from the backup light it would be unbearable to see anything.
Definition of backup light in:
- British & World English dictionary