Two concrete pillars stand in front of the clinic's glass doors to prevent cars from blocking the entrance.

They would keep vehicles off sidewalks and prevent cars with explosives from crashing into the building.

A stretch of purple tape prevented pedestrians and cars from crossing it.

The north side of the bridge has been lined with crash barriers to prevent cars crashing into the river after an accident.

In addition, the number of vehicles with anti-lock systems, which prevent cars from skidding, was lower than had been expected, he said.

He nursed his car to a stop against the outside wall, preventing other cars from getting involved in the incident.

They can cause serious accidents by preventing disabled cars from being shoved onto shoulders of roads.

The forecast rain prevented most cars from changing to slicks when the track was dry.

To prevent cars from overheating in traffic, city officials shut down some highway construction.

He stopped the car by brushing it against the outside wall, a move which prevented other cars from becoming involved in the sudden incident.