Single-track road

The distance between passing places varies considerably, depending on the terrain and the volume of traffic on the road.

Some A-class and B-class roads in the Highlands are still single-track, although many sections have been widened for the sake of faster travel.

Exit and entrance ramps for freeways and motorways are among common examples of one-way single-track roads.

The reason behind this procedure is that traffic going north is in somewhat of a hurry to deliver equipment to Deadhorse, Prudhoe Bay, and the drill site over the frozen Arctic Ocean.

When reconstruction is being done on two-lane highways where traffic is moderately heavy, a worker will often stand at each end of the construction zone, holding a sign with "SLOW" or "GO" written on one side and "STOP" on the reverse.

The workers, who communicate through yelling, hand gestures, or radio, will periodically reverse their signs to allow time for traffic to flow in each direction.

An example of this is the M-89 reconstruction project in Plainwell, Michigan, where westbound traffic is detoured via county roads around town.

When opposing traffic is encountered, the first driver to reach the nearest passing place pulls over, no matter which side, and flashes the headlights to signal the other car to proceed forward.

In the United States, if the situation permits, both vehicles will pull off the road slightly and pass in this manner.