A lot of automotive engines remain in production for quite a while. Cummins' B-Series diesel is the longest-running diesel ...

These symbols, often called "idiot lights," are aimed at being easy to understand. But for many drivers, young and old alike, it's not that easy.

They wanted to know what they should do if there’s a cop behind them with these lights on. Does it mean that they need to pull over and stop? Or if they should move out of the way and slow down to let ...