Mexican Driving Regulations
Most Mexican roads are not up to U.S. standards of smoothness, hardness, width of curve, grade of hill, or safety markings. This, compared with the unpredictable style of Mexican driving can be prime cause for accidents. For this reason driving in Mexico, especially at nighttime can be extremely dangerous.
Mexico's rural roads are unlit and many trucks, carts, pedestrians, and bicycles travel these routes with no lights. Tourists who drive in Mexico are unfamiliar with the area and can suddenly hit a pothole, an animal, another car or end up in a ditch without any warning.
Tourists should consider the following safety rules when driving in Mexico:
Honor Mexican driving customs – because in Mexico, U.S. driving laws and regulations don't always apply. For example Mexican truck drivers frequently indicate with their left turn signals when they're not at a crossroad. This can be confusing to many tourists who are used to signaling left when turning left. However, Mexican drivers often signal left to indicate that the road is clear ahead for you to pass them. In regards to left hand turns – it is procedure to pull over to the right shoulder when wishing to turn left, then proceeding once the road is clear of traffic. Mexican drivers don't stop in the middle of lanes and wait to turn left (as is custom in most North American countries).