State Vehicle Width Guide

This guide is for general reference only. Vehicle width rules can vary by road type, local signage, vehicle, classification, equipment, and permit status. Please measure your final installed width and confirm applicable, state/local requirements before travel.

State	Listed Max Width	Road Limits	Notes
Alabama	102 in
Alaska	102 in
Arizona	96 in general; 102 in on listed routes	102 in applies on Interstate, qualifying federal-aid highways, state-designated highways, local-designated streets, and reasonable access routes.	Noncommercial RV add-ons may exceed 102 in if they do not extend beyond the mirrors.
Arkansas	102 in
California	102 in	Cities/counties may prohibit vehicles over 96 in on highways under their jurisdiction.	RV appurtenances may extend up to 6 in per side; certain buses may reach 104 in; several farm/special-equipment exceptions exceed 102 in.
Colorado	102 in		RV appurtenances may be allowed up to 114 in total outside width.
Connecticut	102 in
Delaware	102 in
Florida	102 in	Vehicles over 96 in may be restricted on roads without 12-ft through lanes or roads found unsafe for wider vehicles.	Noncommercial RV/trailer appurtenances may exceed 102 in if within the mirror envelope.
Georgia	102 in
Hawaii	108 in		Federal rule specifically allows Hawaii to keep a 108 in maximum.
Idaho	102 in
Illinois	102 in	102 in depends on Class I/II highways, Interstate, or designated local routes.	RV appurtenances may extend up to 6 in per side when lane-width conditions are met.
Indiana	102 in
Iowa	102 in		Motor-home/trailer appurtenances or retracted awnings under 6 in are excluded from width.
Kentucky	96 in on non-designated highways; 102 in on Interstates, parkways, and designated highways	102 in applies on Interstates, parkways, designated highways, and stated access routes.
Kansas	102 in
Louisiana	102 in
Maine	102 in
Maryland	102 in	Baltimore Harbor Tunnel Thruway generally restricts vehicles over 96 in except specified/permit movements.	Motor-home/travel-trailer awnings up to 6 in per side may be excluded from width.
Massachusetts	102 in
Michigan	96 in general; 102 in on designated/access routes	102 in may apply to trailers, semitrailers, buses, truck campers, motor homes, or designated highways.	Certain pipe, agricultural, log, pulpwood, or wood-bolt loads may reach 108 in.
Minnesota	102 in
Mississippi	102 in
Missouri	102 in
Montana	102 in
Nebraska	102 in	Certain highways may be designated as 96 in routes.	96 in designations may be used for 10-ft-or-less lanes, narrow bridges, or unsafe road conditions.
Nevada	102 in
New Hampshire	102 in
New Jersey	102 in; 96 in where restricted	DOT may restrict certain roads/properties to 96 in when public safety requires.	NJ regulates many vehicles over 96 in through STAA/truck routing rules.
New Mexico	102 in
New York	96 in general; 102 in on designated/access routes	102 in also allowed on other highways with traffic lanes designed at 10 ft or more, outside NYC-specific rules.	Counties may request 96 in restrictions on unsafe state-highway segments.
North Carolina	102 in		Tobacco loads may have special width allowances; passenger/ RV loads may not project beyond fender limits.
North Dakota	102 in
Ohio	102 in
Oklahoma	102 in		RV awnings/appurtenances and certain safety/load-assist devices may be excluded within stated limits.
Oregon	102 in
Pennsylvania	102 in		Agricultural and special vehicles may have wider limits under specific conditions.
Rhode Island	102 in
South Carolina	102 in
South Dakota	102 in
Tennessee	102 in
Texas	102 in; 96 in for passenger vehicles		Passenger vehicles and their loads are limited to 8 ft; side load projection is also limited.
Utah	102 in
Vermont	102 in
Virginia	102 in		Motor home/travel trailer appurtenances may exceed 102 in if they extend no more than 6 in beyond the body.
Washington	102 in
West Virginia	96 in general; 102 in on designated or 10-ft-lane highways		Motor homes, travel trailers, truck campers, motor buses, and trackless trolley coaches may operate at 102 in on any highway.
Wisconsin	102 in
Wyoming	102 in