Speed LimitsMexico's Federal Highways 2026: 110 km/h Only Where Signed
Mexico's federal rules allow cars up to 110 km/h where signs show it. With no sign: 100 km/h by day, 90 at night, 50 on urban stretches. Buses 95, trucks 80.
On Mexico’s federal highways, 110 km/h is a ceiling for signs, not a default. Where no speed sign is posted, a car’s limit is 100 km/h by day and 90 km/h at night.
Signed maximums and unsigned defaults
Article 134 of the federal highway traffic regulation works in two layers. First, it caps what a sign may show:
| Vehicle | Highest limit a sign may set |
|---|---|
| Cars and other vehicles | 110 km/h |
| Buses | 95 km/h |
| Trucks | 80 km/h |
Second, it fills the gaps where there is no sign at all:
| Vehicle | Federal highway, day | Federal highway, night | Urban stretch |
|---|---|---|---|
| Cars | 100 km/h | 90 km/h | 50 km/h |
| Buses | 95 km/h | 80 km/h | 50 km/h |
| Trucks and tractor-trailers | 80 km/h | 70 km/h | 50 km/h |
Article 135 adds that drivers must also slow for traffic, the road, the vehicle and weather that affects visibility or grip, whatever the number on the sign.
How the fine is worked out
Fines on federal highways are set in multiples of the regulation’s daily unit (cuota diaria), and the multiple depends on the vehicle and on whether you were more than 20 km/h over:
| Vehicle | Up to 20 km/h over | More than 20 km/h over |
|---|---|---|
| Car, van or motorcycle without trailer | 50-60 times | 60-70 times |
| Car, van or motorcycle with trailer | 60-70 times | 70-80 times |
| Truck | 60-70 times | 80-100 times |
| Bus | 80-100 times (under 20 over) | 100-120 times (20 over or more) |
Federal, state and city roads are different systems
These rules cover federal highways and bridges, the numbered long-distance network. State highways and city streets are governed by each state’s or municipality’s own traffic regulation, with their own limits and fines, so the number on a city ring road or a state road can differ from anything above.
Check exact speed limits for your route
Open Speed Limit MapSources
More Resources
Full rules, fines & requirements
Winter tyres, tread depth & rules
Renting a Car?
Compare prices from all major rental companies. Free cancellation on most bookings.
Compare Car Rental PricesSome links on this page are affiliate links. We may earn a commission at no extra cost to you. How our affiliate links work.
Related Questions
On federal highways the maximum that signs may show is 110 km/h for cars, 95 km/h for buses and 80 km/h for trucks. Where no speed sign is posted, cars are limited to 100 km/h by day and 90 km/h at night, and to 50 km/h on urban stretches.
Yes, on federal highways without a speed sign. The default for cars falls from 100 km/h by day to 90 km/h at night; for buses from 95 to 80, and for trucks and tractor-trailers from 80 to 70.
In multiples of the regulation's daily unit (cuota diaria). For a car without a trailer: 50 to 60 times that unit up to 20 km/h over, and 60 to 70 times above 20 km/h over. Towing a trailer raises it to 60-70 and 70-80 times.
No. They cover federal highways and bridges. State highways and city streets follow each state's or municipality's traffic regulations, so limits and fines vary.