Nevada trailer laws and regulations
Nevada trailer rules under NRS 484.593: 1,500 lb brake threshold for post-1975 trailers, 15-minute breakaway hold, dimension caps and Class A licensing.
Nevada’s brake rule is one of the strictest in the country. Under NRS 484.593, every trailer, semi-trailer or pole trailer built after July 1, 1975 with a gross weight of 1,500 lb or more has to have service brakes on all wheels. That’s half the threshold most states use. Any trailer required to have brakes also needs a breakaway that holds the brakes applied for at least 15 minutes.
The DMV registers and titles trailers the same way it handles motor vehicles, except trailers are exempt from insurance, odometer and smog requirements.
Quick reference
| Item | Nevada rule |
|---|---|
| Title and registration | All trailers on public roads |
| Brakes (all wheels) | Trailers 1,500 lb GVW or more, built after July 1, 1975 |
| Pre-1975 light exception | Under 3,000 lb |
| Breakaway hold | 15 minutes minimum |
| Max combo length | 70 ft |
| Max width | 102 in (8.5 ft) |
| Max height | 14 ft |
| Class A CDL trigger | GCWR over 26,001 lb with trailer over 10,000 lb |
Registration and titles
Every trailer used on Nevada public roads has to be registered with the DMV. Travel trailers start at around $27 for registration, with extra taxes layered on by weight and value. Trailers under 1,000 lb unloaded get a smaller motorcycle-sized plate.
For an out-of-state trailer, you’ll need a VIN inspection at registration. If you bought the trailer outside Nevada, expect to pay out-of-state sales tax on top of the registration fee.
General towing rules
Nevada doesn’t keep a long list of towing-specific rules. If something is illegal in normal driving, it’s illegal towing.
A Class A CDL is required when the combined GCWR is 26,001 lb or more and the trailer exceeds 10,000 lb GVWR. That catches a lot of heavier fifth-wheel and gooseneck setups behind 1-ton trucks.
Dimensions
Nevada doesn’t cap trailer length on its own. The combination cap is 70 ft. Width is 102 inches (the statute writes it as 8.5 ft) and height is 14 ft.
Hitches, chains and flags
Safety chains are required in addition to the primary coupling, as a back-up in case the main hitch fails.
Lighting rules
Trailers and semi-trailers 80 inches wide or more need:
- Two front clearance lamps, one each side
- Two rear clearance lamps
- Three identification lamps in a horizontal row, spaced 6 to 12 inches apart, mounted as close to the vertical centreline as practical
- Two side marker lamps and two side reflectors per side, one at the front, one at the rear
Trailers 30 ft or longer need one amber side marker and one centrally located amber reflector on each side. Pole trailers need an amber side marker and amber reflector near the front of the load on each side. Boat trailers typically need front and rear clearance lamps mounted at or near the midpoint of each side.
All reflectors have to be visible at night from 100 to 600 ft. All clearance and side marker lamps need to be visible from 50 to 500 ft.
Speed limits while towing
No separate towing speed. Posted limits apply. Trailer sway at the limit is its own ticket.
Mirror rules
Trucks with a body or load that blocks the rear view need a mirror positioned to show traffic coming from behind. Cars need a mirror that gives at least 200 ft of visibility to the rear.
Brake rules
The headline: post-1975 trailers 1,500 lb GVW or more need service brakes on all wheels. Pre-1975 trailers under 3,000 lb get a pass. Trailers with air or vacuum brakes, plus any trailer over 3,000 lb built after July 1, 1969, need brakes on all wheels strong enough to hold for 15 minutes after a breakaway.
Trailers over 3,000 lb also need parking brakes that hold the trailer stationary on any grade in any weather. Tow vehicles with air-controlled brakes need two means of emergency application: one automatic if towing-vehicle air supply drops, and one manual that the driver can operate. Vacuum-braked tow vehicles need a secondary control device that doesn’t depend on air, hydraulic or other pressure.