Like La Guardia, its takeoff and landing slots have long been controlled by the federal government to prevent gridlock.

He said police will close roads in inland areas at 10am, an hour before the first wave is scheduled to hit, to prevent gridlock in flood zones.

It may be impossible to prevent nuclear gridlock in the Middle East.

None of the districts were able to prevent political gridlock from stalling reform efforts.

"You'll often have traffic cops there, which is great for preventing gridlock, but they often don't account for pedestrians."

Like a nation's highway system, the Internet has traffic rules that prevent chaos and gridlock.

When that happens, to prevent gridlock in the airport, the police close the airport exit that leads to Boston, forcing traffic to head away from the city.

A box junction is a road traffic control measure designed to prevent congestion and gridlock at junctions.

The budget also includes about $1.7 million extra for the Board of Elections, so it can try to prevent gridlock during the municipal elections this year.

He was trying to prevent pedestrian gridlock inside the toy store, at Fifth Avenue and 58th Street, where two gargantuan lines of shoppers converged.