For All State Regulations, See:
All oversize vehicles (excess of 8’6″ wide) width must display “Oversize Load” signs front and rear. Signs, visible in the front and rear, with black letters that are at least 10 inches high of 1 5/8-inch minimum stroke on a yellow background. The signs must read “OVERSIZE LOAD” or “OVERSIZE” and may be mounted in two pieces if necessary. The signs must be neat, clean and mounted securely.
Warning flags are to be used only in daylight hours and must be solid red or florescent orange in color with a minimum size distance of 18″ from one corner to the next corner and be placed at the outer most corners of the shipment as well as on any protrusions.
An oversized or overweight vehicle that travels during hours of darkness must display: On the extreme front of the vehicle, at least two amber, steady-burning lights which are plainly visible under normal atmospheric conditions from a distance of at least 500 feet; On each side of the vehicle in a location near the middle of the vehicle or toward the front of the vehicle, an amber, steady-burning light which is plainly visible under normal atmospheric conditions from a distance of at least 500 feet; and If the rear overhang exceeds 4 feet, two red, steady-burning lights which are placed in a manner to identify the maximum width of the overhang and which are plainly visible under normal atmospheric conditions from a distance of at least 500 feet. All oversize vehicles (excess of 8’6″ wide) must run with low beam headlights ON. Note: You must have a Nevada Light Permit to run flashing revolving amber warning light(s) or even to travel with it turned off but uncovered.
Dimensions: Width: 8' 6" Height: 14' Semi Trailer Length: 53' Maximum Length: 70' (75' with rear overhang0 Legal Overhang: Front/Rear: 10'