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Alabama State Shipping Regulations

Alabama State Shipping Regulations
Alabama DOT oversize and over weight trucking permit laws.

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Alabama DOT shipping regulations for oversize and overweight trucking on state highways and roads.

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Alabama state DOT trucking regulations information for oversize, overweight and heavy haul. Find Alabama DOT regulations for oversize shipping, trucking, pilot cars and transport permits.

Trucking company & pilot car directory.
Locate trucking companies and pilot car companies in Alabama state:

Alabama trucking company directory.
Alabama pilot car directory.
Order Alabama oversize or heavy haul trucking permits.

Legal load limits.
Legal Loads:

Length: There is currently “no set maximum” for vehicles. Trailer length maximum is 57’.
Width: 8’ 6” wide for most roads, 8′ for roads under 12′ in width.
Height: 13’ 6” tall.
Weight: 80,000 lbs.
Overhang: 4′ in the rear and 4′ in the front.

Routine trucking permits.
Trucking oversize and overweight permit limits:

Length: 150′ maximum length overall.
Width: 16′ if shipment is over 16′ in width you are NOT permitted use the interstate system.
Height: 16′ in total height.
Weight: on a single axle; 22,000 lbs, tandem axles: 44,000 lbs, tridum axles; 66,000 lbs, quadem axles; 88,000 lbs, 5 axles; 110,000 lbs, 6 axles; 122,000 lbs, 7 axles; 142,000 lbs, 8 axles; 150,000 lbs.
Overhang: 20’maximum.

Superload information.
The following would qualify a shipment as a superload in the state of Alabama:

Defined as shipments in excess of any of the following dimensions/weights; over 150,000 lbs in weight, over 16’in width, over 16′ in height, over 150′ long. Anything of this nature will require special ALDOT approval. Detailed drawings will be required and need to include axle weights and spacings for both truck tractor and trailer. Loads exceeding 150,000 lbs. are subject to a full scale structural analysis if bridges are in the route. Superload requirements by the ALDOT can be read here.
Notes: If the shipment exceeds any of these dimensions or weights you will need to contact the Alabama state DOT office for superload information. Any permit requests for the shipment of loads with excess weight is subject to a detailed bridge analysis

Permitted travel times & restrictions.
Travel times and restrictions:

The one half hour before sunrise to one-half hour after sunset basic travel rule applies (note times posted on the right of this screen). Travel is allowed all day Saturday with NO SUNDAY TRAVEL PERMITTED. Shipments 120′ to 150′ in length are restricted from moving from 9:00 AM – 3:00 PM Mondays through Fridays. Travel is NO permitted on the following holidays: New Year’s Day, Memorial Day, Independence Day, Labor Day, Thanksgiving Day, and Christmas Day. The Alabama DOT state permit office is closed on these holidays as well as on Martin Luther King Day, Washington’s Birthday, Columbus Day, Confederate Memorial Day, Jefferson Davis’ Birthday and on Veteran’s Day. More information on DOT permit office closure is available here. Travel is NOT restricted on these days.

When pilot cars are required.
A pilot car or escort vehicle is required when:

1 front pilot car (escort vehicle) is required for all loads over 16′ in height with a height pole adjusted 4-6″ higher than the actual shipment. Both a front and rear pilot car (escort vehicle) is required when the shipment exceeds 12′ wide. On some routes a high pole pilot (escort) may be required for even less heights. Rear pilot cars (escort vehicles) for mobile home shipments may be replaced with 2 – 5″ flashing, stobing or rotating amber lights. 1 rear pilot car (escort) is required for shipments over 76′ in length. 1 front and 1 rear pilot car (escort) is required for shipments over 105′ in length. 1 rear pilot car (escort) is required if overhang exceeds 5′ from the rear of trailer or 10′ from the front of the trailer. There are special escort requirements for bulldozers, scrapers, loaders and other construction equipment being transported with a blade or bucket intact.

Pilot car certifications.
Pilot car or escort vehicle certifications & requirements:

A pilot car vehicle must be classified as an actual passenger vehicle to qualify, ie; car, truck, van, etc. A pilot car vehicle must be equipped with a strobing, flashing or rotating amber light. The pilot car must be able to communicate with and be in constant contact with all parties working in relation to the shipment by CB or 2-way radio. Signs mounted on pilot car vehicles must moderately fit the vehicle and not be obtrusive in any manner.

Shipment truck & trailer markings.
Truck, trailer and shipment required signs, banners & flags:

A sign will need to be mounted on the front and rear of any overwidth or overlength truck and trailer or combinations. Banners/signs need to be a minimum of 7′ in width, 18″ in height and be marked with black letters of no less than 10″ in height, with a minimum of a 1-5/8″ line thickness on a yellow or orange background. The actual words required are exactly as follows: “OVERSIZE LOAD”. Red flags must be a minimum of 18″ square and be placed at all 4 outer most corners of all trucks.

Alabama state DOT information:
Alabama DOT contact and  information:

Alabama Department of Transportation or Alabama DOT ALDOT Permits and Operations
1409 Coliseum Boulevard Montgomery, Alabama 36110

Phone: 334-834-1092 and 334-242-6700 or toll free: 800-499-2782
FAX: 334-832-9084
Alabama DOT: Main page of the Alabama state trucking permits website.
E-mail trucking permits:  Jesse Wallace;
Current routing detours: Here is the current ALDOT closures memo.
Misc: Alabama DOT trucking permit manual – has a lot of good information. Escrow account customers may replenish escrow by credit card.  Contact: Mechelle @ 1-800-499-2782 and press option 4.
DOT permit office Hours: 7:00 AM – 4:45 – PM

Hint: Alabama DOT requires you to sign their permit with red ink only.

The information contained in these pages is research information primarily for use by oversize and overweight trucking company drivers, dispatchers and pilot car companies. While every effort is put into maintaining the accuracy of this information you must absolutely verify this information with the Alabama State DOT Permits office before commencing movement.
  1. What is the wind rile in Alabama please.

    • “Wind Rife” ?

      • Could you please further explain your question please? At the moment we have not heard about any laws that involve measuring “wind” speeds and have assumed this up to the discretion of the driver. We’ll be happy to further research it for you but want to make certain we clearly understand the question. Thank you for your time.

  2. Yes. Anything over 8’6″ is required to be permitted in order to transport.

  3. What are the calculations for oversized loads on steep mountain grade roads for rate of speed and time to stop at a red light placed at bottom of steep grade? What should the length of a yellow light? What type of safety notifications for changing lights are required?

    • Well, firstly pardon the delay as you got caught in a huge amount of posting spam. However once cleared out, there you were Dr. Richards. So, to be direct as possible this is a pretty isolated incident however does occur. So, “oversize” wouldn’t have a huge effect on the capabilities of the vehicle to stop. However, weight would. And this is yet another reason besides creating stress cracks in roads that extra axels are required in most of the world in order to be eligible to ship heavy haul items (in NA over 80,000 lbs GVW). With the extra axels you get that many more brake pads and shoes as well. Any experienced driver which is usually what it takes to set behind the wheel of something so drastically expensive (some over 1 mil overall) would know what speed to take the approach with which would probably be very slow. The brakes combined with the axles are designed to accommodate the maximum weight allowed on the trailer so failure would be an extreme. In certain circumstances either the state would require or the carrier may request a traffic control officer at the light. In the event one was not requested or required the driver would simply call a yellow (and probably even a green) light a red one and come to a complete stop before continuing. Yet another reason newbies drive $100,000 rigs and heavy haul drivers are well seasoned with most over 20-30 years in the industry. It’s a pecking order that is determined by either how much money you have saved (which takes a lot of years) or how much verifiable experience you have as word of mouth probably couldn’t get you in the passenger seat let alone behind the wheel. I hope this helps you.

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