Originally Posted by LittleBigMan
Angle of reflection is everything. While night driving, I came upon a car that had no tail lights working, driving in the lane to my right, a few car lengths ahead. The built-in reflectors in it's tail light covers were practically invisible because I was not directly behind it.
I agree that lights are the best bet.
Good point LittleBiggy, Most of us have come up on a car with no taillights and even when right directly behind them the car reflectors are literally useless, especially if travelling at fast speeds.