The first maximum speed law for Mexico was created in 1903 by then president Porfirio Díaz. It established a maximum of 10 km/h (6 mph) for small and crowded streets, and 40 km/h (25 mph) elsewhere.
Current speed limits are:
10 km/h (6 mph) in parking lots and residential areas60 km/h (37 mph) in streets with no speed limit60–80 km/h (37–50 mph) on urban arterial roads (ejes, calzadas, beltways and freeways)80 km/h (50 mph) in avenues with no speed limit70–90 km/h (43–56 mph) on rural two-lane roads90 km/h (56 mph) on two-lane highways90–100 km/h (56–62 mph) on major highways inside cities100 km/h (62 mph) on major highways leaving or approaching towns or cities110 km/h (68 mph) on major highwaysNo Mexican highway allows going beyond 110 km/h, but the speed limit is enforced generally above 130 km/h (81 mph) only.
