There's no "one thing". There are many. Dont fall asleep at the wheel, dont drive after drinking or doing other drugs, dont cross the centre line, dont take your eyes off the road,scan the road ahead, keep at or below the speed limit...in short: concentrate on driving!
Speed up to avoid the collision.
a flashlight
There is no way to avoid an impending collision.
While rowing a small utility boat at night a flashlight should be carried to help avoid a collision.
Flashlight
flashlight
Be alert and try to avoid a collision if at all possible.
You should take action to avoid a collision.
flashlight
Never.... you should NEVER avoid this beautiful country known as Italy.
The powerboat should pass to the stern of the sailboat to avoid its wash causing a problem for the sailboat To avoid a collision, the powerboat should avoid crossing ahead of the sailboat.
maneuver to avoid a collision