For the purposes of truck size and weight restrictions, the Illinois State Code requires the DOT to maintain and provide a system of Class I, II, and III highway routes. See www.gettingaroundillinois.com (Ill Rev Stat. chap. 15 § 15-116). These road systems have been designated by IDOT nationwide as follows: Winter increase: State weight limits are increased by 10% between the dates set by the Commissioner of Transport for each zone, based on a model frost index each winter (Minn. Stat. Ann. § 196.826 Subd. 1). Ten per cent tolerance: The Director of the Ministry of Transport has the authority to issue permits for vehicles transporting agricultural products from the harvest field to the original depot site, transporting potatoes or sugar beet or transporting solid waste from 15 July to 1 December, and for the general transport of products from 1 December to 7 March. These permits allow vehicles to exceed state weight limits for non-interstate highways by 10%, provided the authorized vehicles do not exceed the GVW limit of 105,500 lbs (N.D. Cent.

Code §39-12-05.3 [4] and [5]). Canola: The Commissioner of Transport is authorized to issue a special annual rapeseed transport vehicle permit for a three-car combination with a maximum total weight of 105,500 lbs. These vehicles may only be driven on the following routes: 51 As of 1 October 2012. State law was amended on April 5, 2013 to exempt retractable axle vehicles from weight restrictions when the axle is retracted to turn (Iowa Code Ann. §321.463[13]). [ Return to footnote 51 referrer. ] Cotton: A vehicle equipped with an automatic loading area and designed exclusively to transport pressed seed cotton from the farm to a cotton ginning plant or from sage to the market may travel on non-interstate highways with a tandem axle weight of up to 50,000 pounds. (N.C.

Gen. §20-118[k]). Concrete products: Specialized vehicles for transporting concrete products do not need to meet center spacing, axle/tire loads, or total weight requirements, provided that these vehicles do not exceed a total weight of 60,000 pounds, have at least three axles, and operate within 50 miles of their home base on non-interstate highways (Miss. Code Ann. §63-5-27 [4] [a]). The State Highway Patrol is authorized to issue licenses to drive vehicles that exceed state weight limits. Each permit may specify the route to be travelled and any other restrictions deemed necessary. A multi-trip permit can be issued for non-divisible loads up to £150,000 and is subject to higher fees.112 State law also allows the State Highway Patrol and local authorities to issue rules for the movement of oversized and overweight vehicles (N.D. Cent. Code §39-12-02). The State Highway Patrol and the Department of Transportation also have the authority to enter into regional cooperation authorization agreements authorizing each participating state to issue regional permits for the transportation of overweight or oversized indivisible vehicles from one state in the region to or through other states in the region under a single driver`s license. These permits must comply with government licensing requirements and weight restrictions (N.D.

113 Publicly Owned Vehicles: State weight restrictions do not apply to trucks, semi-trailers or trailers of federal, state, district or municipal government units (Ky. Rev. Stat. § 189.280). When it comes to trucks operating on the NHS in Nevada, a provision in state law allows trucks to cross certain elements of federal borders: Nevada state law allows several axle and GVW exemptions for different types of vehicles and goods. Agricultural products: Maximum axle loads in regular operation will be increased by 10% for vehicles transporting agricultural products81 from the point of harvest or storage to the first point of delivery on a Michigan highway. However, an increase in axle load of 10% does not change the restrictions on the gross permissible weight. This exception does not apply to interstate highways (Mich. Comp. Laws Ann. §257.722[13]). Coal, Oil and Aggregates: The Commissioner of the Ministry of Transport may issue obesity licences authorizing the operation of vehicles used to transport coal or coal by-products from a mine or other production site to a processing plant, power plant, loading dock or railway.

These approved vehicles can exceed weight limits of up to 24,000 lbs. on a single axle and 45,000 lbs on a tandem axle. The total weight of three-axle vehicles must not exceed 60,000 pounds, the total weight of four-axle vehicles must not exceed 70,000 pounds, and five-axle vehicles with at least 35 feet of axle space between the extreme axles may have a total weight of up to 90,000 pounds. Six-axle vehicles can reach a total weight of up to 110,000 lbs. These permits are only valid for up to 85 miles in the state of the preparation plant, loading dock, or railroad (Virginia Code § 46.2-1143). The total weight of vehicles in regular operation (operation without a special permit) is regulated by three different weight tables. Idaho has adopted FBF for vehicles traveling on interstate highways. A second weight table exists for vehicles traveling on non-interstate highways. An alternative weight table is provided by Idaho state law for vehicles containing loads of certain products32 on non-interstate highways. See Figure 20 for a summary of weight determinations for Idaho in regular operation (Idaho Code §49-1001, §49-1002 and §49-1004).

Miscellaneous Construction Machinery: State weight restrictions do not apply to rubber-tyred vehicles used for the construction, storage, or transportation of equipment or materials if the vehicles are not primarily designed for use on a highway and operate only in close proximity to where they are used (Miss.