Hundreds of police will monitor traffic in Paris on Monday after pollution levels prompted the French government to impose major restrictions.

Only motorists whose cars have odd-numbered registration plates will be allowed to drive.

On Tuesday, if the restrictions remain in place, it will be the turn of those with even-numbered plates.

Hugh Schofield in Paris: "At the end of last week it was bad - you really felt the catch in your throat"

Ministers acted after air pollution exceeded safe levels for five days running in Paris and surrounding areas.

The smoggy conditions have been caused by a combination of cold nights and warm days, which have prevented pollution from dispersing.

(Source: BBC)