Car speed limits in San Luis Potosí (2026)
Last reviewed: 9 October 2026
In short: Cars may do 20 km/h in school zones on secondary streets (up to 30 km/h on primary roads), 30 km/h on secondary streets and 50 km/h on primary avenues. State highways have 80 km/h outside urban areas, and autopistas 110 km/h for cars. Public transport may not exceed 60 km/h anywhere.
| Rule | What applies |
|---|---|
| Built-up areasPassenger car on public roads | 20 km/h in hospital, care-home and shelter zones and in school zones on secondary and tertiary streets (up to 30 km/h in school zones on primary roads); 30 km/h on secondary and tertiary streets; 50 km/h on primary avenues without controlled access; 80 km/h in the central lanes of controlled-access avenues; 50 km/h on state highways within urban areas [1] |
| Outside built-up areas (single carriageway)Passenger car on public roads | 80 km/h on state highways outside urban areas [1] |
| MotorwaysPassenger car on public roads | 110 km/h for cars (95 km/h for buses, 80 km/h for freight) on highways and autopistas of state and municipal jurisdiction [1] |
| School zonesPassenger car on public roads | 20 km/h in school zones and surroundings on secondary and tertiary streets; up to 30 km/h in school zones on primary roads and highways. [1] |
Notes
- These figures are the ceilings that road signs and traffic regulations may not exceed. Municipal traffic regulations can set lower limits. No intersection may be approached above 50 km/h. The text read is the version updated to 30 April 2026.
Sources
- Congreso del Estado de San Luis Potosí: Ley de Tránsito del Estado de San Luis Potosí (al 30 de abril de 2026) (consulted 9 October 2026) · all sources
National rules that also apply
These rules are set at national level in Mexico and apply here too, alongside the rules above. All national rules for Mexico
| Built-up areas (Federal roads) | 50 km/h (source: Diario Oficial de la Federación (Secretaría de Gobernación)) |
|---|---|
| Outside built-up areas (single carriageway) (Federal roads) | 100 km/h by day, 90 km/h at night (source: Diario Oficial de la Federación (Secretaría de Gobernación)) |
| Outside built-up areas (dual carriageway or expressway) (Federal roads) | As signed, up to 110 km/h. Where no sign sets a limit: 100 km/h by day, 90 km/h at night. (source: Diario Oficial de la Federación (Secretaría de Gobernación)) |
| Motorways (Federal roads) | As signed, up to 110 km/h. Where no sign sets a limit: 100 km/h by day, 90 km/h at night. (source: Diario Oficial de la Federación (Secretaría de Gobernación)) |
| Roadworks zones (Federal roads) | Drivers must obey the signs, devices and red-flag signals placed at roadworks on federal roads. Disobeying them is fined 20 to 30 times the daily quota (cuota diaria). (source: Diario Oficial de la Federación (Secretaría de Gobernación)) |
More rules in San Luis Potosí
- Minimum age for a car driving licenceMinimum age for a car licence: 18 (permit from 16)
- Seat belts and child seats
Related pages
General information, not legal advice. Rules change: check the official source before you fly or ride.