French gendarmes stop cars and trucks to check vehicles and verify the identity of travellers on the A1 motorway between Paris-Lille-Brussels near the Chaumont toll station, in France, November 16, 2015, as security increases after last Friday's deadly attacks in the French capital. REUTERS/Pascal Rossignol ATTENTION FRENCH LAW REQUIRES THAT CAR REGISTRATION PLATES ARE MASKED IN PUBLICATIONS IN FRANCE