Drive on the right side of the road and overtake on the left The minimum age to drive a car is 17 Seat belts must be worn in the back seats if belts are fitted. Children who are too small to use seatbelts must be transported in a correctly fitted child seat Children under 10 years old must always sit in the back of the car Use of low lights or luces bajas is mandatory 24 hours per day on highways and main roads Mobile phones may only be used with a hands-free system Vehicles can only be parked in the direction of traffic flow. It is illegal to park a vehicle facing opposing traffic