The Vermont Statutes Online

Title 23 : Motor Vehicles

Chapter 013 : Operation of Vehicles

Subchapter 015 : WEIGHT, SIZE, LOADS

• § 1392. Gross weight limits on highways

  Except as provided in section 1400 of this title, a person shall not operate or cause to be operated a motor vehicle in excess of the total weight, including vehicle, object, or contrivance and load, of:

  (1) 16,000 pounds upon any bridge with a wood floor, wood subfloor, or wood stringers on a class 3 or 4 town highway or 20,000 pounds on a bridge with wood floor, wood subfloor, or wood stringers on a class 1 or 2 town highway unless otherwise posted by the selectboard of such town.

  (2) 24,000 pounds, upon a class 2, 3, or 4 town highway or bridge with other than wood floor, in any town or incorporated village.

  (3) No vehicle may exceed a gross weight in excess of 80,000 pounds unless the operator or owner of the vehicle has complied with the provisions of section 1400 of this title or except as otherwise provided in this section.

  (4) Subject to the limit upon the weight imposed upon the highway through any single or tandem axle as set forth in section 1391 of this title, the total gross weight of vehicle with load imposed upon the highway by all axles of a vehicle or combination of axles of a vehicle shall not be in excess of the value in pounds given for the respective distance between the first and last axle of the vehicle or combination of axle spacing for vehicles measured longitudinally to the nearest foot as set forth in the following table:

  Distance between the center of the first and center of the last axle of any group of two or more axles		Maximum load in pounds carried in any group of two or more axles computed to the nearest 500 pounds
  	2 axles	3 axles	4 axles	5 axles	6 axles	7 axles
  8 or less	34,000	34,000
  9	39,000	42,500
  10	40,000	43,500
  11		44,000
  12		45,000	50,000
  13		45,500	50,500
  14		46,500	51,500
  15		47,000	52,000
  16		48,000	52,500
  17		48,500	53,500
  18		49,500	54,000
  19		50,000	54,500
  20		51,000	55,500		66,000
  21		51,500	56,000		66,500
  22		52,500	56,500		67,000
  23		53,000	57,500		68,000
  24		54,000	58,000		68,500	74,000
  25		54,500	58,500		69,000	74,500
  26		55,500	59,500		69,500	75,000
  27		56,000	60,000		70,000	75,500
  28		57,000	60,500		71,000	76,500
  29		57,500	61,500		71,500	77,000
  30		58,500	62,000		72,000	77,500
  31		59,000	62,500		72,500	78,000
  32		60,000	63,500		73,000	78,500
  33			64,000		74,000	79,000
  34			64,500		74,500	80,000
  35			65,500		75,000	80,000
  36			66,000	70,500	75,500	80,000
  37			66,500	71,000	76,000	80,000
  38			67,500	72,000	77,000	80,000
  39			68,000	72,500	77,500	80,000
  40			68,500	73,000	78,000	80,000
  41			69,500	73,500	78,500	80,000
  42			70,000	74,000	79,000	80,000
  43				75,000	80,000	80,000
  44				75,500	80,000	80,000
  45				76,000	80,000	80,000
  46				76,500	80,000	80,000
  47				77,500	80,000	80,000
  48				78,000	80,000	80,000
  49				78,500	80,000	80,000
  50				79,000	80,000	80,000
  51				80,000	80,000	80,000

  (5)(A) Despite the axle load provisions of section 1391 of this title and the distance in feet between first and last axle as provided for in subdivision (4) of this section, a motor truck having three axles, if the two rear axles are both power driven and both equipped with adequate brakes, the gross weight of the three axles of the truck shall not exceed 55,000 pounds.

  (B) When application is made to register a motor truck under the provisions of this subdivision, the applicant shall submit to the Commissioner of Motor Vehicles specifications as to its make, brake equipment, and manufacturer’s recommended gross weight. In the Commissioner’s discretion, the Commissioner may refuse registration for its operation under this subdivision if the specifications for the vehicle would not permit its safe operation when so loaded.

  (6) Despite the axle load provisions of section 1391 of this title and the distance in feet between first and last axle as provided for in subdivision (4) of this section, a motor truck having four axles, three of which are a tri-axle and at least two axles in this group being power driven and equipped with adequate brakes; the gross weight of the four axles of the truck shall not exceed 60,000 pounds, however:

  (A) No two axles in the tri-axle group shall support more than 42,000 pounds with a 10 percent tolerance.

  (B) No single axle of the tri-axle group shall support more than 22,400 pounds with a 10 percent tolerance.

  (C) The total load supported by the tri-axle group shall not exceed 54,000 pounds.

  (D) Three or more axles within a distance of 12 feet or less apart shall be considered as a tri-axle group, and if a single axle is closer than eight feet to the nearest axle of the tri-axle group, the total load shall not exceed that allowed for a tri-axle group.

  (E) [Repealed.]

  (7)-(10) [Repealed.]

  (11) The weights or tolerances, or both, as set forth in subdivisions (5) and (6) of this section shall not apply to the highways designated as portions of the Dwight D. Eisenhower National System of Interstate and Defense Highways unless authorized by federal law.

  (12) [Repealed.]

  (13) Despite the axle-load provisions of section 1391 of this title and the maximum gross load of subdivision (4) of this section, a special annual permit, which shall expire with the vehicle’s registration, except for vehicles not registered in Vermont, in which case the permit shall become void on January 1 following date of issue, may be issued to a person operating on designated routes on the State Highway System for a fee of $458.00 for each vehicle registered for a weight of 80,000 pounds. This special permit shall be issued only for a combination of vehicle and semi-trailer or trailer equipped with five or more axles, with a distance between axles that meets the minimum requirements of registering the vehicle to 80,000 pounds as allowed under subdivision (4) of this section. The maximum gross load under this special permit shall be 90,000 pounds. Unless authorized by federal law, this subdivision shall not apply to operation on the Dwight D. Eisenhower National System of Interstate and Defense Highways.

  (14) Despite the axle-load provisions of section 1391 of this title and the axle spacing and maximum gross load provisions of subdivision (4) of this section, a special annual permit, which shall expire with the vehicle’s registration, except for vehicles not registered in Vermont, in which case the permit shall become void on January 1 following date of issue, may be issued to a person transporting loads on vehicles on designated routes on the State Highway System for the following fees for each vehicle unit. Unless authorized by federal law, the provisions of this subdivision regarding weight limits or tolerances, or both, shall not apply to operation on the Dwight D. Eisenhower National System of Interstate and Defense Highways. This special permit shall be issued for the following vehicles and conditions:

  (A) 3-axle trucks with a single steering axle and a rear tandem axle that have a maximum gross weight of not more than 60,000 pounds when registered for a minimum gross weight of not more than 55,000 pounds, the permit fee shall be $187.00.

  (B) 4-axle trucks with a single steering axle and a rear tri-axle unit that have a maximum gross weight of not more than 69,000 pounds when registered for a minimum weight of 60,000 pounds, the permit fee shall be $422.00.

  (C) 4-axle tractor semi-trailer or truck trailer combination with a maximum gross weight of not more than 72,000 pounds, provided the distance between the second axle of the tractor and the rear axle of the trailer is at least 24 feet measured to the nearest foot. For each foot or fraction of a foot less than 24 feet, measured to the nearest foot, a reduction of 2,000 pounds in the maximum gross weight shall be made. The permit fee shall be $18.00.

  (D) 5- or more axle tractor semi-trailer or truck trailer combination with a maximum gross weight of not more than 76,000 pounds, provided that the distance between the first and last axle of two consecutive sets of tandem axles is at least 24 feet measured to the nearest foot. For each foot or fraction of a foot less than 24 feet, measured to the nearest foot, a reduction of 2,000 pounds in the maximum gross weight shall be made. The permit fee shall be $18.00.

  (E) No single axle of a tandem axle unit shall support more than 60 percent of the total weight supported by such tandem axle unit.

  (F) No single axle of a tri-axle unit shall support more than 40 percent of the total weight supported by such tri-axle unit.

  (G) The maximum load on any axle of such vehicle shall not exceed more than 600 pounds per inch of tire width computed in conformity with the manufacturer’s designated width.

  (H) A five percent tolerance shall be allowed on the gross vehicle weights allowed under permits issued pursuant to this subdivision.

  (15) Despite the axle load provisions of section 1391 of this title and the axle spacing and the maximum gross load of subdivision (4) of this section, a 5-axle tractor semi-trailer may operate on State highways with the following conditions:

  (A) For each foot or fraction of a foot less than 36 feet between the first and last axle of two consecutive sets of tandem axles, a reduction of 2,000 pounds in the maximum gross weight of 80,000 pounds shall be made.

  (B) Conditions in subdivisions (14)(D) and (F) of this section shall also apply to this subdivision (B), and unless authorized by federal law, this subdivision shall not apply to operation on the Dwight D. Eisenhower National System of Interstate and Defense Highways.

  (16) Notwithstanding the axle load provisions of section 1391 of this title and the maximum gross load of subdivision (4) of this section, a five or more axle truck tractor, semi-trailer combination, or truck trailer combination, when the load consists solely of unprocessed milk products as defined in subdivision 4(55) of this title, may be registered for and operated with a maximum gross weight of 90,000 pounds on State highways without permit and upon posted State and town highways when the vehicle has been issued a permit in compliance with the provisions of section 1400 of this title; however:

  (A) Vehicles operated pursuant to this subdivision (16) shall be subject to the same axle spacing restrictions as are applied to five or more axle vehicles registered to 80,000 pounds as set forth in subdivision (4) of this section.

  (B) Unless prohibited by federal law, the provisions of this subdivision (16) shall apply to operation on the Dwight D. Eisenhower National System of Interstate and Defense Highways.

  (C) [Repealed.]

  (17) Notwithstanding the gross vehicle weight provisions of subdivision (4) of this section, a truck trailer combination or truck tractor, semi-trailer combination with six or more load-bearing axles registered for 80,000 pounds shall be allowed to bear a maximum of 99,000 pounds by special annual permit, which shall expire with the vehicle’s registration, except for vehicles not registered in Vermont, in which case the permit shall become void on January 1 following the date of issue, for operating on designated routes on State and town highways, subject to the following:

  (A) The combination of vehicles must have, as a minimum, a distance of 51 feet between extreme axles.

  (B) The axle weight provisions of section 1391 of this title and the axle weight provisions of subdivisions (6)(A)–(D) of this section shall also apply to vehicles permitted under this subdivision (17).

  (C) When determining the civil penalty for a gross overweight violation of this subdivision (17), the civil penalty for any portion of the first 10,000 pounds over the permitted weight shall be the same as provided in section 1391a of this title, and for overweight violations 10,001 pounds or more over the permitted weight, the civil penalty schedule provided in section 1391a shall be doubled.

  (D) The weight permitted by this subdivision (17) shall be allowed for foreign trucks that are registered or permitted for 99,000 pounds in a state or province that recognizes Vermont vehicles for weights consistent with this subdivision (17).

  (E) Unless authorized by federal law, the provisions of this subdivision (17) shall not apply to operation on the Dwight D. Eisenhower National System of Interstate and Defense Highways.

  (F) The fee for the annual permit as provided in this subdivision (17) shall be $458.00 for vehicles bearing up to 90,000 pounds and $671.00 for vehicles bearing up to 99,000 pounds.

  (G) [Repealed.]

  (18) The owner of any Vermont or foreign registered motor vehicle seeking permits authorized by this section shall make application for the appropriate permits and pay the appropriate permit fees.

  (19)(A) A person issued a permit under the provisions of subdivision (13), (14), or (17) of this section, and upon payment of a $10.00 administrative fee for each additional permit, may obtain additional permits for the same vehicle, provided the additional permit is for a lesser weight and provided the vehicle or combination of vehicles meets the minimum requirements for the permit sought as set forth in this section.

  (B) A person issued a permit under the provisions of subdivision (14) of this section, and upon payment of the difference in fees for each permit sought, may obtain additional permits for the same vehicle, provided the vehicle or combination of vehicles meets the minimum requirements for the permit sought as set forth in this section.

  (C) [Repealed.]

  (20) [Repealed.]

  (21) [Repealed.] (Amended 1959, No. 63, eff. March 27, 1959; 1961, No. 94, eff. May 3, 1961; 1961, No. 281, §§ 1-5; 1963, No. 206, § 5; 1967, No. 166, eff. April 15, 1967; 1967, No. 385 (Adj. Sess.), § 1; 1975, No. 232 (Adj. Sess.), § 10, eff. April 7, 1976; 1977, No. 15; 1977, No. 41, § 2, eff. April 19, 1977; 1977, No. 177 (Adj. Sess.), §§ 2-4, 12, eff. May 1, 1978; 1981, No. 172 (Adj. Sess.), § 11a; 1983, No. 86, § 3; 1983, No. 192 (Adj. Sess.), § 2, eff. April 27, 1984; 1985, No. 124 (Adj. Sess.), § 5; 1987, No. 145 (Adj. Sess.), §§ 3, 4, eff. May 13, 1988; 1987, No. 187 (Adj. Sess.), §§ 1, 2; 1989, No. 168 (Adj. Sess.), §§ 1, 2, eff. May 12, 1990; 1989, No. 192 (Adj. Sess.), §§ 1, 2; 1991, No. 68, §§ 1-3, eff. June 24, 1991; 1991, No. 72, §§ 2, 3; 1995, No. 119 (Adj. Sess.), § 5, eff. April 25, 1996; 2001, No. 102 (Adj. Sess.), § 26, eff. May 15, 2002; 2001, No. 141 (Adj. Sess.), §§ 38, 39, eff. June 21, 2002; 2003, No. 70 (Adj. Sess.), § 29, eff. March 1, 2004; 2007, No. 61, § 7; 2009, No. 50, § 51; 2009, No. 63 (Adj. Sess.), §§ 2, eff. Jan. 13, 2010, § 4, eff. Dec. 17, 2010; 2011, No. 23, § 2, eff. May 11, 2011; 2015, No. 159 (Adj. Sess.), § 42; 2017, No. 158 (Adj. Sess.), § 30, eff. Jan. 1, 2019; 2021, No. 20, § 246; 2023, No. 41, § 21, eff. July 1, 2023; 2023, No. 41, § 23, eff. June 1, 2023; 2023, No. 78, § G.135, eff. January 1, 2024.)