Head-on collision
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Californiaofframpwrongwaysignage.jpg
Californiaofframpwrongwaysignage.jpg
Standard wrong-way sign package used on all freeway off-ramps in California (and since copied by Georgia and Virginia).
A head-on collision is one where the front ends of the ships, trains, planes or vehicles hit each other, as opposed to a side-collision or rear-end collision.
Road transport
In the context of freeways, such collisions are particularly difficult to avoid, since freeways were designed to facilitate high-speed travel. The resulting car accidents are often fatal.
Some U.S. states have installed special signage at freeway off-ramps to discourage drivers from going the wrong way.