Vehicle Length State Comparison

Note:

No state shall prohibit the use of trailers or semitrailers of such dimensions as those that were in actual or lawful use in such stateon Dec. 1, 1982. Neither shall any state prohibit the use of existing trailers or semitrailers of up to 28' 6" in length in a truck tractor-semitrailer-trailer combination if those trailers and semitrailers were actually and lawfully operating on Dec. 1, 1982, within a 65-foot length limit in any state.

**	53' allowed with permit.
2.	State may restrict 26'6" based on the strength, safety, and durability of the highway.
A	Not allowed (allowed in some states by permit).
AA	On portion of USRT4, a no-fee permit may be required if 68-72 ft.; if greater than 72 ft., single trip permit required. Call VT Transport.
B	On any hwy. tractor-semitrailer combo. 65' (distance between kingpin and rearmost semitrailer axle must be 40' or less; single axlesemitrailer kingpin dimension is limited to 38' ). On federally designated hwys., no overall combination length limitation or kingpinrestriction if semitrailer is 48' or less. Or, semitrailer may be 53' if kingpin to centerline of rearmost axle for trlrs. with 2 or more axles isno longer than 40', single rear axle is limited to 38'.Twin-trailer combinations 65' on all hwys. if either trailer exceeds 28'6”; 75' on non-designated hwys. if neither trailer exceeds 28'6”; and unlimited length on federally designated system if neither trailer exceeds 28'6”. Seetinyurl.com/accessroutes and tinyurl.com/restrictedroutes for more details.
C	53 ft trailers permitted if distance between last axle of tractor and first axle of semitrailer does not exceed 37 ft.
CC	Only allowed on N.J. Double-Trailer Truck Network.
D	Combinations with semitrailers or twin-trailers in excess of limits may not exceed 70 ft.
E	If gross weight is more than 75,185 lb, legal tandem weight is 34,000 lb.
EE	Kingpin to center of rear axle cannot exceed 43 ft.
F	The towed vehicle shall not exceed 50 ft in length from the point of attachment to the tractor. If the towed vehicle exceeds 48 ft in lengthfrom the point of attachment to the tractor, the distance between the kingpin and the rearmost axle or a point midway between the tworear axles, if the two rear axles are a tandem axle, shall not exceed 41 ft.
FF	Provided distance between kingpin and center of rearmost axle group is 41 ft or less, or a point midway between rear tandem axles.
G	Semitrailers on Class I and II hwys. are limited to 45'6” max. kingpin to rear axle (42'6” on Class III and other hwys.). Tractor-semitrailer-trailer combos have no limit on Class I hwys. and a 65' front axle to rear axle on Class II hwys. On Class III and other hwys., max.tractor/semitrailer wheelbase is 55' or 65' overall length.
GG	Combination of trailers can be 61 ft including tongue, or 75 ft overall.
H	Combination of trailers can be 68 ft. including tongue.
HH	Kingpin to rearmost axle cannot exceed 43 ft; if the semitrailer is longer than 48 ft 6 in.
I	Semitrailers longer than 50 ft. can operate on designated hwys. only; are limited to 3 axles; and shall have a wheelbase of 37 ft 6 in. - 40ft 6 in. (+/- 6 in.) (measured from the kingpin coupling to the center of the axles or to center of tandem axle if equipped with 2 axles).
L	If in excess of 48 ft—maximum distance from kingpin to center of rearmost axle not to exceed 41 ft if single, or the center of a group ofrear axles, and must be equipped with a rear underride guard.
LL	Semitrailers measuring greater than 48' and less than or equal to 53' are allowed to travel on Interstates and CT routes numbered 1 -399 inclusive, 450, 476, 508, 693, and 695. These semitrailers are also allowed to travel 1 mile off of these routes for food, fuel andterminal access provided the distance is no more than 43' between the kingpin and the center of the rearmost axle with wheels incontact with the road surface.
MM	100 ft unless limited & will then be posted.
N	Tractor-semitrailer combo 60 ft for Group 1 hwys.; 50 ft for groups 2 and 3 hwys. Semitrailers not specified for group 1; 40 ft for group 2;and 35 ft. for group 3. Tractor-twin-trailers 75 ft for group 1; 65 ft for group 2 and group 3. Trailers 40 ft for group 1; 35 ft for groups 2 and3. On interstate and designated hwys., no semitrailer or trailer in a twin-trailer combo may exceed 40 ft; both trailing units togethermeasured from the front of the 1st to the rear of the 2nd may not exceed 68 ft.
NS	Not specified (but must meet trailer length).
O	28 ft 6 in. if trailer was manufactured prior to December 2, 1982; 28 ft if trailer was manufactured after December 1, 1982.
ø	No overall length restrictions imposed, but must not exceed trailer length.
OO	Maximum distance from kingpin to center of rearmost axle not to exceed 41 ft and must be equipped with rear underride guard.
PP	Distance from kingpin to center of rear axle is limited to 43 ft maximum and must be equipped with a rear underride guard. Not allowedin New York City.
RR	Kingpin to rear axle cannot exceed 43 ft.
S	28 ft 6 in. on each trailer unit operating in a road tractor-trailer-trailer combination if the towbars do not exceed 19 ft and the overalllength of the trailer-trailer unit including towbars does not exceed 80 ft. The maximum length of semitrailer-semitrailer or semitrailer-trailer combination, excluding the length of the truck-tractor, is 81 ft 6 in. provided the maximum length of either unit does not exceed 45ft. If the towbar length exceeds 19 ft, the towbar shall be flagged during day light hours and lighted at night. The weight of the secondunit may not exceed the weight of the first unit by more than 3000 lb.
SS	53 ft allowed if kingpin to rear axle does not exceed 43 ft.
T	Unless otherwise noted.
TT	In a double-trailer combination, the semi-trailer cannot exceed 48 ft and the second trailer or semi-trailer cannot exceed 40 ft. Combinedlength of trailers cannot exceed 81 ft.
U	2,3, and 4-unit combos., 110 ft on 4-lane divided hwys; 95 ft on most state hwys.
V	"Wide right turn" sign required.
WW	96" applies on I-895, the Harbor Tunnel Thruway. On US1/Conowingo Dam trailers 102" wide/53' long not allowed.
X	28 ft 6 in. semitrlr. and 28 ft 6 in. straight trlr. only allowed on certain roads.
XX	If greater than 53'6", kingpin to rear axle limited to 41'.
Y	As measured from front of 1st trailing unit to rear of second.
ZZ	53' trailer on primary hwy. routes only; see www.ncdot.gov/travel/statemapping/

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Vehicle Length State Comparison

Note:

Interstate & Desig. Hwys (Des.) — Straight Trucks

Interstate & Desig. Hwys (Des.) — Combinations: Tractor-Twin-Trailers

Footnotes