The police patrolled the area, suspended public parking and towed away unauthorized vehicles.

They're going to shoot all unauthorized vehicles and pedestrians after two o'clock!

A locked gate prevents unauthorized vehicles from reaching the site.

This is a very dangerous situation, and sooner or later a person will be struck by an unauthorized vehicle.

Bus lanes can become ineffective if weak enforcement allows use by unauthorized vehicles or illegal parking on them (for example in shopping areas).

In addition, Dominion has placed concrete barriers across nearby public nature trails to prevent unauthorized vehicles from driving to the nuclear plant.

Our street is around the corner from the Clintons' home, and since no unauthorized vehicles were allowed on the former president's street, our small street became very popular.

Rubber tires and cinder blocks lined up along sidewalks near Syrian positions keep unauthorized vehicles from approaching.

Furthermore, there is a good deal of evidence to indicate that unauthorized vehicles still use the road.

The primary business is removing unauthorized vehicles from parking spaces.