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1		AN ACT concerning transportation.
2		Be it enacted by the People of the State of Illinois,
3		represented in the General Assembly:
4		Section 5. The Illinois Vehicle Code is amended by changing
5		Section 15-111 as follows:
6		(625 ILCS 5/15-111) (from Ch. 95 1/2, par. 15-111)
7		Sec. 15-111. Wheel and axle loads and gross weights.
8		(a) No vehicle or combination of vehicles with pneumatic
9		tires may be operated, unladen or with load, when the total
10		weight on the road surface exceeds the following: 20,000 pounds
11		on a single axle; 34,000 pounds on a tandem axle with no axle
12		within the tandem exceeding 20,000 pounds; 80,000 pounds gross
13		weight for vehicle combinations of 5 or more axles; or a total
14		weight on a group of 2 or more consecutive axles in excess of
15		that weight produced by the application of the following
16		formula: W = 500 times the sum of (LN divided by N-1) + 12N +
17		36, where "W" equals overall total weight on any group of 2 or
18		more consecutive axles to the nearest 500 pounds, "L" equals
19		the distance measured to the nearest foot between extremes of
20		any group of 2 or more consecutive axles, and "N" equals the
21		number of axles in the group under consideration.
22		The above formula when expressed in tabular form results in
23		allowable loads as follows:

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1		Distance measured
2		to the nearest
3		foot between the
4		extremes of any Maximum weight in pounds
5		group of 2 or of any group of
6		more consecutive 2 or more consecutive axles
7		axles
8 feet 2 axles 3 axles 4 axles 5 axles 6 axles 9 4 34,000 10 5 34,000 11 6 34,000 12 7 34,000 13 8 38,000* 42,000 14 9 39,000 42,500 15 10 40,000 43,500 16 11 44,000 17 12 45,000 50,000 18 13 45,500 50,500 19 14 46,500 51,500 20 15 47,000 52,000 21 16 48,000 52,500 58,000 22 17 48,500 53,500 58,500 23 18 49,500 54,000 59,000 24 19 50,000 54,500 60,000 25 20 51,000 55,500 60,500 66,000

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1 21 51,500 56,000 61,000 66,500 2 22 52,500 56,500 61,500 67,000 3 23 53,000 57,500 62,500 68,000 4 24 54,000 58,000 63,000 68,500 5 25 54,500 58,500 63,500 69,000 6 26 55,500 59,500 64,000 69,500 7 27 56,000 60,000 65,000 70,000 8 28 57,000 60,500 65,500 71,000 9 29 57,500 61,500 66,000 71,500 10 30 58,500 62,000 66,500 72,000 11 31 59,000 62,500 67,500 72,500 12 32 60,000 63,500 68,000 73,000 13 33 64,000 68,500 74,000 14 34 64,500 69,000 74,500 15 35 65,500 70,000 75,000 16 36 66,000 70,500 75,500 17 37 66,500 71,000 76,000 18 38 67,500 72,000 77,000 19 39 68,000 72,500 77,500 20 40 68,500 73,000 78,000 21 41 69,500 73,500 78,500 22 42 70,000 74,000 79,000 23 43 70,500 75,000 80,000 24 44 71,500 75,500 25 45 72,000 76,000 26 46 72,500 76,500

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1 47 73,500 77,500 2 48 74,000 78,000 3 49 74,500 78,500 4 50 75,500 79,000 5 51 76,000 80,000 6 52 76,500 7 53 77,500 8 54 78,000 9 55 78,500 10 56 79,500 11 57 80,000
12		*If the distance between 2 axles is 96 inches or less, the 2
13		axles are tandem axles and the maximum total weight may not
14		exceed 34,000 pounds, notwithstanding the higher limit
15		resulting from the application of the formula.
16		Vehicles not in a combination having more than 4 axles may
17		not exceed the weight in the table in this subsection (a) for 4
18		axles measured between the extreme axles of the vehicle.
19		Vehicles in a combination having more than 6 axles may not
20		exceed the weight in the table in this subsection (a) for 6
21		axles measured between the extreme axles of the combination.
22		Local authorities, with respect to streets and highways
23		under their jurisdiction, without additional fees, may also by
24		ordinance or resolution allow the weight limitations of this
25		subsection, provided the maximum gross weight on any one axle
26		shall not exceed 20,000 pounds and the maximum total weight on

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1		any tandem axle shall not exceed 34,000 pounds, on designated
2		highways when appropriate regulatory signs giving notice are
3		erected upon the street or highway or portion of any street or
4		highway affected by the ordinance or resolution.
5		The following are exceptions to the above formula:
6		(1) Vehicles for which a different limit is established
7		and posted in accordance with Section 15-316 of this Code.
8		(2) Vehicles for which the Department of
9		Transportation and local authorities issue overweight
10		permits under authority of Section 15-301 of this Code.
11		These vehicles are not subject to the bridge formula.
12		(3) Cities having a population of more than 50,000 may
13		permit by ordinance axle loads on 2 axle motor vehicles 33
14		1/2% above those provided for herein, but the increase
15		shall not become effective until the city has officially
16		notified the Department of the passage of the ordinance and
17		shall not apply to those vehicles when outside of the
18		limits of the city, nor shall the gross weight of any 2
19		axle motor vehicle operating over any street of the city
20		exceed 40,000 pounds.
21		(4) Weight limitations shall not apply to vehicles
22		(including loads) operated by a public utility when
23		transporting equipment required for emergency repair of
24		public utility facilities or properties or water wells.
25		(4.5) A 3 or 4 axle vehicle (including when laden)
26		operated or hired by a municipality within Cook, Lake,

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1		McHenry, Kane, DuPage, or Will county being operated for
2		the purpose of performing emergency sewer repair that would
3		be subject to a weight limitation less than 66,000 pounds
4		under the formula in this subsection (a) shall have a
5		weight limitation of 66,000 pounds or the vehicle's gross
6		vehicle weight rating, whichever is less. This paragraph
7		(4.5) does not apply to vehicles being operated on the
8		National System of Interstate and Defense Highways, or to
9		vehicles being operated on bridges or other elevated
10		structures constituting a part of a highway.
11		(5) Two consecutive sets of tandem axles may carry a
12		total weight of 34,000 pounds each if the overall distance
13		between the first and last axles of the consecutive sets of
14		tandem axles is 36 feet or more, notwithstanding the lower
15		limit resulting from the application of the above formula.
16		(6) A truck, not in combination and used exclusively
17		for the collection of rendering materials, may, when laden,
18		transmit upon the road surface, except when on part of the
19		National System of Interstate and Defense Highways, the
20		following maximum weights: 22,000 pounds on a single axle;
21		40,000 pounds on a tandem axle.
22		(7) A truck not in combination, equipped with a self
23		compactor or an industrial roll-off hoist and roll-off
24		container, used exclusively for garbage, refuse, or
25		recycling operations, may, when laden, transmit upon the
26		road surface, except when on part of the National System of

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1		Interstate and Defense Highways, the following maximum
2		weights: 22,000 pounds on a single axle; 40,000 pounds on a
3		tandem axle; 40,000 pounds gross weight on a 2-axle
4		vehicle; 54,000 pounds gross weight on a 3-axle vehicle.
5		This vehicle is not subject to the bridge formula.
6		(7.5) A 3-axle rear discharge truck mixer registered as
7		a Special Hauling Vehicle, used exclusively for the mixing
8		and transportation of concrete in the plastic state, may,
9		when laden, transmit upon the road surface, except when on
10		part of the National System of Interstate and Defense
11		Highways, the following maximum weights: 22,000 pounds on
12		single axle; 40,000 pounds on a tandem axle; 54,000 pounds
13		gross weight on a 3-axle vehicle. This vehicle is not
14		subject to the bridge formula.
15		(8) Except as provided in paragraph (7.5) of this
16		subsection (a), tandem axles on a 3-axle truck registered
17		as a Special Hauling Vehicle, manufactured prior to or in
18		the model year of 2024 and first registered in Illinois
19		prior to January 1, 2025, with a distance greater than 72
20		inches but not more than 96 inches between any series of 2
21		axles, is allowed a combined weight on the series not to
22		exceed 36,000 pounds and neither axle of the series may
23		exceed 20,000 pounds. Any vehicle of this type manufactured
24		after the model year of 2024 or first registered in
25		Illinois after December 31, 2024 may not exceed a combined
26		weight of 34,000 pounds through the series of 2 axles and

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1		neither axle of the series may exceed 20,000 pounds.
2		A 3-axle combination sewer cleaning jetting vacuum
3		truck registered as a Special Hauling Vehicle, used
4		exclusively for the transportation of non-hazardous solid
5		waste, manufactured before or in the model year of 2014,
6		first registered in Illinois before January 1, 2015, may,
7		when laden, transmit upon the road surface, except when on
8		part of the National System of Interstate and Defense
9		Highways, the following maximum weights: 22,000 pounds on a
10		single axle; 40,000 pounds on a tandem axle; 54,000 pounds
11		gross weight on a 3-axle vehicle. This vehicle is not
12		subject to the bridge formula.
13		(9) A 4-axle truck mixer registered as a Special
14		Hauling Vehicle, used exclusively for the mixing and
15		transportation of concrete in the plastic state, 2024 2025
16		and not operated on a highway that is part of the National
17		System of Interstate Highways, is allowed the following
18		maximum weights: 20,000 pounds on any single axle; 36,000
19		pounds on a series of axles greater than 72 inches but not
20		more than 96 inches; and 34,000 pounds on any series of 2
21		axles greater than 40 inches but not more than 72 inches.
22		The gross weight of this vehicle may not exceed the weights
23		allowed by the bridge formula for 4 axles. The bridge
24		formula does not apply to any series of 3 axles while the
25		vehicle is transporting concrete in the plastic state, but
26		no axle or tandem axle of the series may exceed the maximum

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1		weight permitted under this paragraph (9) of subsection
2		(a).
3		(10) Combinations of vehicles, registered as Special
4		Hauling Vehicles that include a semitrailer manufactured
5		prior to or in the model year of 2024, and registered in
6		Illinois prior to January 1, 2025, having 5 axles with a
7		distance of 42 feet or less between extreme axles, may not
8		exceed the following maximum weights: 20,000 pounds on a
9		single axle; 34,000 pounds on a tandem axle; and 72,000
10		pounds gross weight. This combination of vehicles is not
11		subject to the bridge formula. For all those combinations
12		of vehicles that include a semitrailer manufactured after
13		the effective date of P.A. 92-0417, the overall distance
14		between the first and last axles of the 2 sets of tandems
15		must be 18 feet 6 inches or more. Any combination of
16		vehicles that has had its cargo container replaced in its
17		entirety after December 31, 2024 may not exceed the weights
18		allowed by the bridge formula.
19		(11) The maximum weight allowed on a vehicle with
20		crawler type tracks is 40,000 pounds.
21		(12) A combination of vehicles, including a tow truck
22		and a disabled vehicle or disabled combination of vehicles,
23		that exceeds the weight restriction imposed by this Code,
24		may be operated on a public highway in this State provided
25		that neither the disabled vehicle nor any vehicle being
26		towed nor the tow truck itself shall exceed the weight

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1		limitations permitted under this Chapter. During the
2		towing operation, neither the tow truck nor the vehicle
3		combination shall exceed 24,000 pounds on a single rear
4		axle and 44,000 pounds on a tandem rear axle, provided the
5		towing vehicle:
6		(i) is specifically designed as a tow truck having
7		a gross vehicle weight rating of at least 18,000 pounds
8		and is equipped with air brakes, provided that air
9		brakes are required only if the towing vehicle is
10		towing a vehicle, semitrailer, or tractor-trailer
11		combination that is equipped with air brakes;
12		(ii) is equipped with flashing, rotating, or
13		oscillating amber lights, visible for at least 500 feet
14		in all directions;
15		(iii) is capable of utilizing the lighting and
16		braking systems of the disabled vehicle or combination
17		of vehicles; and
18		(iv) does not engage in a tow exceeding 20 miles
19		from the initial point of wreck or disablement. Any
20		additional movement of the vehicles may occur only upon
21		issuance of authorization for that movement under the
22		provisions of Sections 15-301 through 15-319 of this
23		Code. The towing vehicle, however, may tow any disabled
24		vehicle to a point where repairs are actually to occur.
25		This movement shall be valid only on State routes. The
26		tower must abide by posted bridge weight limits.

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1		Gross weight limits shall not apply to the combination of
2		the tow truck and vehicles being towed. The tow truck license
3		plate must cover the operating empty weight of the tow truck
4		only. The weight of each vehicle being towed shall be covered
5		by a valid license plate issued to the owner or operator of the
6		vehicle being towed and displayed on that vehicle. If no valid
7		plate issued to the owner or operator of that vehicle is
8		displayed on that vehicle, or the plate displayed on that
9		vehicle does not cover the weight of the vehicle, the weight of
10		the vehicle shall be covered by the third tow truck plate
11		issued to the owner or operator of the tow truck and
12		temporarily affixed to the vehicle being towed. If a roll-back
13		carrier is registered and being used as a tow truck, however,
14		the license plate or plates for the tow truck must cover the
15		gross vehicle weight, including any load carried on the bed of
16		the roll-back carrier.
17		The Department may by rule or regulation prescribe
18		additional requirements. However, nothing in this Code shall
19		prohibit a tow truck under instructions of a police officer
20		from legally clearing a disabled vehicle, that may be in
21		violation of weight limitations of this Chapter, from the
22		roadway to the berm or shoulder of the highway. If in the
23		opinion of the police officer that location is unsafe, the
24		officer is authorized to have the disabled vehicle towed to the
25		nearest place of safety.
26		For the purpose of this subsection, gross vehicle weight

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1		rating, or GVWR, means the value specified by the manufacturer
2		as the loaded weight of the tow truck.
3		(b) As used in this Section, "recycling haul" or "recycling
4		operation" means the hauling of non-hazardous, non-special,
5		non-putrescible materials, such as paper, glass, cans, or
6		plastic, for subsequent use in the secondary materials market.
7		(c) No vehicle or combination of vehicles equipped with
8		pneumatic tires shall be operated, unladen or with load, upon
9		the highways of this State in violation of the provisions of
10		any permit issued under the provisions of Sections 15-301
11		through 15-319 of this Chapter.
12		(d) No vehicle or combination of vehicles equipped with
13		other than pneumatic tires may be operated, unladen or with
14		load, upon the highways of this State when the gross weight on
15		the road surface through any wheel exceeds 800 pounds per inch
16		width of tire tread or when the gross weight on the road
17		surface through any axle exceeds 16,000 pounds.
18		(e) No person shall operate a vehicle or combination of
19		vehicles over a bridge or other elevated structure constituting
20		part of a highway with a gross weight that is greater than the
21		maximum weight permitted by the Department, when the structure
22		is sign posted as provided in this Section.
23		(f) The Department upon request from any local authority
24		shall, or upon its own initiative may, conduct an investigation
25		of any bridge or other elevated structure constituting a part
26		of a highway, and if it finds that the structure cannot with

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1		safety to itself withstand the weight of vehicles otherwise
2		permissible under this Code the Department shall determine and
3		declare the maximum weight of vehicles that the structures can
4		withstand, and shall cause or permit suitable signs stating
5		maximum weight to be erected and maintained before each end of
6		the structure. No person shall operate a vehicle or combination
7		of vehicles over any structure with a gross weight that is
8		greater than the posted maximum weight.
9		(g) Upon the trial of any person charged with a violation
10		of subsection (e) or (f) of this Section, proof of the
11		determination of the maximum allowable weight by the Department
12		and the existence of the signs, constitutes conclusive evidence
13		of the maximum weight that can be maintained with safety to the
14		bridge or structure.
15		(Source: P.A. 97-201, eff. 1-1-12; 98-409, eff. 1-1-14; 98-410,
16		eff. 8-16-13; revised 9-19-13.)