Car speed limits in New Mexico (2026)
Last reviewed: 9 October 2026
In short: New Mexico law sets 30 mph in business and residence districts, 15 mph when passing a posted school zone at school times, 55 mph on county roads without a posted limit and a general maximum of 75 mph. Limits may be altered after an engineering survey, up to 75 mph. In construction zones posted as double fine zones, the posted limit applies and the speeding penalty is doubled.
| Rule | What applies |
|---|---|
| Built-up areasPassenger car on public roads | 30 mph in a business or residence district; 15 mph on all highways when passing a school while children are going to or leaving school and the school zone is properly posted [1] |
| Outside built-up areas (single carriageway)Passenger car on public roads | 75 mph is the general maximum; 55 mph on a county road without a posted speed limit [1] |
| Outside built-up areas (dual carriageway or expressway)Passenger car on public roads | No separate figure: the general maximum of 75 mph applies [1] |
| MotorwaysPassenger car on public roads | No separate figure: the general maximum of 75 mph applies, and no declared limit may exceed 75 mph [1] |
| School zonesPassenger car on public roads | 15 mph on all highways when passing a school while children are going to or leaving school and the school zone is properly posted. [1] |
| Roadworks zonesPassenger car on public roads | In construction zones posted by the Department of Transportation as double fine zones, the posted limit applies and the penalty assessment for speeding is twice the normal amount. [1] |
Notes
- The secretary of transportation and local authorities may declare other limits after an engineering survey and traffic investigation, not above 75 mph (§ 66-7-303).
Sources
- New Mexico Compilation Commission (NMOneSource): Chapter 66 Motor Vehicles, NMSA 1978 (Internet Archive snapshot of 23 September 2026) (consulted 9 October 2026) · all sources
New Mexico and neighbouring states
| State | Built-up areas | Outside built-up areas (single carriageway) | Outside built-up areas (dual carriageway or expressway) | Motorways |
|---|---|---|---|---|
| New Mexico | 30 mph | 75 mph (55 mph unposted county roads) | 75 mph (general maximum) | 75 mph maximum |
| Arizona | 25 mph (prima facie) | 65 mph (prima facie) | — | 65 mph (75 mph where posted) |
| Colorado | 25 mph business, 30 mph residential | 55 mph (40 mph open mountain highways) | 65 mph (four-lane expressways) | 65 mph |
| Oklahoma | Set by ODOT after a study | Set by ODOT after a study | Set by Transportation Commission | Up to 75 mph (interstate); 80 mph (turnpikes) |
| Texas | 30 mph | 70 mph; 60 mph on unnumbered roads | — | 70 mph; up to 85 mph where set |
More rules in New Mexico
- CannabisPossession for personal use: Legal for adults 21+, within limits · Growing at home: Yes: 12 plants, 6 mature
- Minimum age for a car driving licenceMinimum age for a car licence: 15½ (provisional licence) · Earliest age to drive a car supervised: 15 (instruction permit)
- E-bikes and speed pedelecsLegal class: Three classes · Minimum age: Class 3: 16
- FireworksConsumers may buy and use category F2 fireworks: Yes (permissible fireworks incl. aerial) · Minimum age to buy: 16
- Knives and pepper sprayFolding pocket knives: Concealed deadly weapon barred; knives not named · Locking or one-handed knives: Auto-opening knives barred
- Statutory minimum wageNational statutory minimum wage: Yes · Current adult minimum wage (gross): $12.00 per hour
- Using a mobile phone while drivingHands-free use: Allowed
- Seat belts and child seatsSeat belt compulsory in front seats: Yes · Seat belt compulsory in rear seats: Yes
- Tobacco and nicotine age limitsMinimum age to buy tobacco: 21 · Minimum age to buy e-cigarettes: 21
- Drinking age and alcohol salesMinimum age to buy beer and wine: 21 · Minimum age to buy spirits: 21
- Drink-driving limitsBlood alcohol limit for ordinary drivers: 0.08%
Related pages
General information, not legal advice. Rules change: check the official source before you fly or ride.