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Brake Laws
| State By State Braking Laws | |||||||
| From the Digest of Motor Laws / AAA / Edition 73 | |||||||
| State | State DOT or DMV Phone Number | State DOT or DMV Web Address | Width | Height | Max Total Length | Max Trailer Length | Trailer Braking System Requirements |
| Alabama | 334-242-6358 | www.dot.state.al.us | 102" | 13' 6" | N/A | 40' | Required over 3000 lbs. GVW |
| Alaska | 907-465-3900 | www.dot.state.ak.us | 102" | 14' | 75' | 40' | Required over 5000 lbs. GVW |
| Arizona | 602-712-7227 | www.azdot.gov | 102" | 13' 6" | 65' | 40' | Required over 3000 lbs. GVW |
| Arkansas | 501-569-2612 | www.ahtd.state.ar.us | 102" | 13' 6" | 65' | 53.5' | Required over 3000 lbs. GVW / all trailers weighing 1500 lbs or more shall have brakes on all wheels |
| California | 916-654-5266 | www.dot.ca.gov | 102" | 14' | 65' | 40' | Required over 3000 lbs. GVW / on at least 2 wheels |
| Colorado | 800-999-4997 | www.dot.state.co.us | 102" | 14' 6" | 70' | N/A | Required over 3000 lbs. GVW |
| Connecticut | 860-594-3000 | www.dot.state.ct.us | 102" | 13' 6" | 60' | N/A | Required over 3000 lbs. GVW, On all wheels. All trailers over 8000 lbs. GVW, shall be capable of braking by foot or hand. |
| Delaware | 302-760-2080 | www.deldot.net | 102" | 13' 6" | 65' | 40' | Every motor vehicle when operated on a highway shall be equipped with brakes adequate to control the movemant, and to stop and hold such vehicle and any trailer attached thereto, including 2 separate means of applying the brakes. |
| Dist. Columbia | 202-673-6813 | www.ddot.dc.gov/main.shtm | N/A | 13' 6" | 85' | 60' | Required over 3000 lbs. GVW, On all wheels |
| Florida | 850-414-4100 | www.dot.state.fl.us | 102" | 13' 6" | 65' | 40' | Required over 3000 lbs. GVW, On all wheels. |
| Georgia | 404-656-5267 | www.dot.state.ga.us | 102" | 13' 6" | 60' | N/A | Required over 3000 lbs. GVW, On all wheels. |
| Hawaii | 808-587-2150 | www.state.hi.us/dot/ | 108" | 14' | 65' | 40' | Required over 3000 lbs. GVW |
| Idaho | 208-334-8000 | www.itd.idaho.gov | 102" | 14' | 75' | 48' | Trailers with a unladen weight of 1500 lbs. Must have independent braking system |
| Illinois | 217-782-7820 | www.dot.state.il.us/ | 102" | 13' 6" | 65' | 60' | Required over 3000 lbs. GVW |
| Indiana | 317-232-5533 | www.in.gov/dot/ | 102" | 13' 6" | 65' | N/A | Required over 3000 lbs. GVW |
| Iowa | 515-239-1101 | www.dot.state.ia.us | 102" | 13' 6" | 70' | N/A | Required over 3000 lbs. GVW |
| Kansas | 785-296-3566 | www.ksdot.org | 102" | 14' | 65' | N/A | Every combination of vehicles shall have a service breaking system, which will stop such combination within 40 feet from an initial speed of 20 mph. |
| Kentucky | 502-564-4890 | www.kytc.state.ky.us | 96" | 13' 6" | 63' | N/A | Kentucky law does not specifically require brakes on trailers, however, vehicles singular or in combination must be able to stop within distance specified by statute. |
| Louisiana | 225-379-1100 | www.dotd.state.la.us | 96" | 13' 6" | 70' | 40' | Required over 3000 lbs., GVW On all wheels. |
| Maine | 207-624-3000 | www.maine.gov/mdot | 102" | 13' 6" | 65' | 48' | Required over 3000 lbs., GVW On all wheels. |
| Maryland | 410-865-1142 | www.mdot.state.md.us/ | 102" | 13' 6" | 55' | 40' | Required over 3000 lbs. GVW. Not required on all wheels if trailer does not exceed 40% of the GVW of the towing vehicle. Over 10,000 lbs required on all wheels |
| Massachusetts | 617-973-7800 | www.state.ma.us/mhd/ | 102" | 13' 6" | 65' | 40' | Every trailer having an unladed weight of more than 10,000 lbs shall be equipped with air or electric brakes. |
| Michigan | 517-373-2090 | www.michigan.gov/mdot | 102" | 12' 6" | 65' | 45' | Required over 3000 lbs. GVW |
| Minnesota | 651-296-3000 | www.dot.state.mn.us/ | 102" | 13' 6" | 60' | 45' | A trailer with a gross weight of 3000 lbs, GVW or more, or a gross weight that exceeds the empty weight of the towing vehicle, must be equipped with brakes that can adequately control the movement of and stop and hold the trailer. |
| Mississippi | 601-359-7001 | www.mdot.state.ms.us | 102" | 13' 6" | 53' | 40' | Required over 2000 lbs. GVW, On all wheels. |
| Missouri | 888-275-6636 | www.modot.state.mo.us/ | 102" | 13' 6" | 55' / 65' | N/A | Independent breaking system not required except on trailers coupled by a 5th wheel & kingpin. |
| Montana | 406-444-6200 | www.mdt.state.mt.us | 102" | 14' | 65' | N/A | Required over 3000 lbs. GVW, On all wheels. Less than 3000 lbs GVW not required if the total weight of the trailer does not exceed 40% of the GVW of the towing vehicle. |
| Nebraska | 402-471-2281 | www.dmv.state.ne.us | 102" | 14' 6" | 65' | 40' | Required over 3000 lbs. GVW Over 6500 lbs GVW require brakes on all wheels. |
| Nevada | 775-888-7000 | www.nevadadot.com | 102" | 14' | 70' | N/A | Required over 1500 lbs. GVW, On all wheels. |
| New Hampshire | 603-271-3734 | www.state.nh.us/dot | 102" | 13' 6" | N/A | 48' | Every trailer shall at a speed of 20 mph be capable of stopping within a distance of 30 feet. |
| New Jersey | 609-530-3536 | www.state.nj.us/transportation/ | 102" | 13' 6" | 50' | 40' | Every trailer must be equipped with brakes and be synchronized with towed vehicle. |
| New Mexico | 505-827-5100 | www.nmshtd.state.nm.us | 102" | 14' | 75' | 40' | Required over 3000 lbs. GVW |
| New York | 518-457-6195 | www.dot.state.ny.us | 102" | 13' 6" | 65' | 48' | Required on trailers that weigh over 1000 lbs. / adequate brakes requires over 3000 lb GVW |
| North Carolina | 919-733-2522 | www.ncdot.org | 96" | 13' 6" | 60' | 35' | Required over 4000 lbs. GVW |
| North Dakota | 701-328-2500 | www.nd.gov/dot | 102" | 14' | 75' | 53' | Every trailer must be equipped with adequate brakes. |
| Ohio | 614-466-2335 | www.dot.state.oh.us | 102" | 13' 6" | 65' | 40' | Brakes required if the trailer has an empty weight of over 2000 lbs |
| Oklahoma | 405-522-8000 | www.okladot.state.ok.us | 102" | 13' 6" | 65' | 40' | Required over 3000 lbs. GVW |
| Oregon | 888-ASK-ODOT | www.odot.state.or.us/home | 102" | 14' | 65' | 45' | Independent braking system not required but combination of vehicles must stop within legal limits. |
| Pennsylvania | 717-787-2838 | www.dot.state.pa.us/ | 102" | 13' 6" | 60' | N/A | Every trailer must be equipped with adequate brakes. |
| Rhode Island | 401-222-2481 | www.dot.state.ri.us | 102" | 13' 6" | 60' | N/A | Required over 4000 lbs. GVW, On all wheels. |
| South Carolina | 803-737-2314 | www.dot.state.sc.us/ | 102" | 13' 6" | N/A | 48' | Required over 3000 lbs. GVW, On all wheels. Under 3001 lbs brakes not required unless trailer exceeds 40% of the towing vehicle gross weight. |
| South Dakota | 605-773-3265 | www.sddot.com | N/A | 14' | N/A | N/A | Required on all trailers. |
| Tennessee | 615-741-2848 | www.tdot.state.tn.us/ | 102" | 13' 6" | N/A | N/A | Required over 3000 lbs. GVW |
| Texas | 512-463-8588 | www.dot.state.tx.us/txdot.htm | 102" | 13' 6" | 65' | N/A | Required over 4500 lbs. GVW |
| Utah | 801-965-4559 | www.dot.state.ut.us | 102" | 14' | 65' | 40' | Every combination of vehicle shall at a speed of 20 mph be capable of stopping within a distance of 40 feet. |
| Vermont | 802-828-2657 | www.aot.state.vt.us | 102" | 13' 6" | 65' | 45' | Required over 3000 lbs. GVW on at least 1 axle. Over 6000 lbs GVW required on all wheels |
| Virginia | 804-786-2801 | http://virginiadot.org/ | 102" | 13' 6" | 65' | 45' | Required over 3000 lbs. GVW |
| Washington | 360-705-7000 | www.wsdot.wa.gov | 102" | 14' | 60' | N/A | Required on all trailers on all wheels. Under 3000 lbs not required unless trailer exceeds 40% of the towing vehicle gross weight. |
| West Virginia | 800-642-9066 | www.wvdot.com | 102" | 13' 6" | 75' | 40' | Required over 3000 lbs. GVW |
| Wisconsin | 608-266-1466 | www.dot.wisconsin.gov/ | 102" | 13' 6" | 60' | N/A | Required over 3000 lbs. GVW |
| Wyoming | 307-777-4714 | http://wydotweb.state.wy.us | 102" | 14' | 65' | 45' | Every combination of vehicle shall at a speed of 20 mph be capable of stopping within a distance of 40 feet. |
| NOTE: GRAVELY TRAILERS ASSUMES NO LIABILITY IN THE INFORMATION PROVIDED ABOVE. | |||||||
| WE SUGGEST IF YOU HAVE SPECIFIC INFORMATION OR TO VERIFY THE INFORMATION PROVIDED | |||||||
| USE THE SUPPLIED PHONE NUMBERS OR WEB SITES FOR THE SPECIFIC STATE IN QUESTION. | |||||||
| INFORMATION PROVIDED FROM THE AAA DIGEST OF MOTOR LAWS EDITION #73 | |||||||