Imagine driving through Countryside on your way to work. Your normal commute is uneventful until you stop at the last intersection before your office. While you came to a slow stop at the red light, the driver behind you did not.
The next thing you know, you are in the middle of the intersection hoping that you do not get t-boned by the traffic coming from the cross street. Fortunately, after the initial impact, the other cars in the vicinity did not hit you. But, you still have a bit of a mess on your hands after the rear-end collision.