This would be where a cushion of space, provided by the five second rule, would come in handy. Keeping five seconds behind the vehicle in front of you, has a tactical advantage, as well as a means of collision avoidance.
Watching brake lights two or three cars in front also gives an early warning. I've also been known to brake check someone following too close.
Another rule of thumb, while stopped at a light, if you can't see the bottom of the tires of the vehicle in front of you over the hood of your car, where they contact the road, you are too close. That amount of space doesn't sound like much, but if you are rear ended, it'll keep you from being shoved into the car in front, in most cases. It also provides enough space to pull around, should the car in front suddenly become disabled, or the situation becomes hostile.
Keeping your distance from other vehicles on the road, is more than a safety issue.
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