Jersey walls were erected around some buildings to prevent vehicles from coming too close.

The formula is necessary to prevent heavy vehicles from damaging roads and bridges.

A locked gate prevents unauthorized vehicles from reaching the site.

The resulting damage prevented vehicles from traveling onto the pier for repairs.

That prevented vehicles within a single unit interfering with each other.

Safety banks may be needed on some routes to prevent vehicles running over open edges, or to indicate a safe route.

The main reason for this technique is to prevent vehicles from losing track of direction and getting lost.

They are used to prevent runaway vehicles colliding with another train further down the slope.

Occasionally the traffic had to be stopped to prevent modern vehicles spoiling the period setting.

A traffic island was installed on the south end of the bridge to prevent larger vehicles from using it.