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Vehicle Weights and Dimensions GuideVehicle WeightandDimension Limitsin ManitobaFebruary 12, 2021In the event of any discrepancy between this Weights and Dimensions Guide and theHighway Traffic Act (HTA) or the Vehicle Weights and Dimensions on Classes of Highways Regulation(MR 155/2018), the HTA and MR 155/2018 will take precedence.Updates to this Guide will be available onManitoba Infrastructure’s website for motor carriers at: www.gov.mb.ca/mit/mcd/
Vehicle Weights and Dimensions Limits in ManitobaContentsTerms Used in this GuideiUnits of Measure Used in this GuideviAuxiliary DevicesviiConversions: Imperial/MetricviiWide-base Single Tire ChartviiiLEGAL CONFIGURATIONS IN MANITOBA1SINGLE STEER TRUCK TRACTOR/TRAILER COMBINATION . 2TRIDEM DRIVE TRUCK TRACTOR/TRAILER COMBINATION . 5A-TRAIN . 8B-TRAIN . 13C-TRAIN . 17STRAIGHT TRUCK . 22TRIDEM DRIVE STRAIGHT TRUCK . 23TANDEM STEER/TRIDEM DRIVE STRAIGHT TRUCK . 24TANDEM STEER/TANDEM DRIVE STRAIGHT TRUCK . 26STRAIGHT TRUCK AND PONY TRAILER . 27STRAIGHT TRUCK AND FULL TRAILER . 29INTERCITY BUS AND RECREATIONAL VEHICLES. 31ii
Terms Used in this GuideAerodynamic device: Means auxiliary equipment that is designed and used to improvethe aerodynamic performance of a vehicle and is mounted at the rear of a truck, traileror semi-trailer;A-Train: A combination of vehicles composed of a truck tractor, a lead semi-trailerfollowed by an A-dolly and either a semi-trailer or a full trailer.Auxiliary equipment: Means equipment that is permanently mounted at the front, atthe rear, or on the side of a vehicle, and is not designed nor intended to be used toincrease the vehicle’s load-carrying capacity.Axle Group: A tandem axle or tridem axle. (See tandem axle and tridem axle definitions,below.)Axle Spread: The distance between the centers of the axles in an axle group.Axle Unit: A single axle, or a tandem or tridem axle group.B-Train: A combination of vehicles composed of a truck tractor and a lead semi-trailer,followed by another semi-trailer, attached to a fifth wheel coupler mounted on the rearof the first semi-trailer.Box Length: Applies to the distance from the front of the load-carrying area to the rearof the load-carrying area, and the load. Auxiliary equipment is not included in thismeasurement.Class A1: Applies to one of the three highway classifications – RTAC, A1 and B1.Class B1: Applies to one of the three highway classifications – RTAC, A1 and B1.Converter Dolly: A dolly equipped with one or two axles and designed to connect to atow bar on the rear of the truck or trailer in front. An A-dolly has a single drawbar with acentered coupling, and a C-dolly has two separate couplings side-by-side.C-Train: A combination of vehicles composed of a truck tractor and a semi-trailer,followed by another semi-trailer, attached to the first semi-trailer by the means of a Cdolly.Dimension A: The measurement from the centre of the last axle on the lead semi trailerto the centre of the first axle on the converter dolly or second trailer.i
Drawbar: Is a solid coupling between a hauling vehicle and its hauled load. It is thestructural part of a full trailer, pony trailer or trailer converter dolly used for the purposeof coupling with a hitching device or fifth wheel coupler.Drawbar Length: Applies to distance measured from the hitching device of the towingvehicle to: the front of the load carrying portion of a pony trailer, or the centre of the front axle unit of the full trailer, or the centre of the lower fifth wheel coupler locking device of a trailer converter dollyon an A-train or C-train.Drive Axle: An axle that is connected to the power source of a motor vehicle and sendsthe power to the wheels.Fifth Wheel Coupler: A coupling device securely attached to the chassis of a vehiclewhich will accept a semi-trailer kingpin inserted through the device and will lock thekingpin in position to allow rotation.Full Trailer: A trailer without motive power that is designed to be towed by anothervehicle and is designed so that all of its weight and load is carried on its own axles.Gross Axle Weight: The gross weight carried by an axle unit and transferred to the roadby the wheels of that axle.Gross Vehicle Weight or GVW: Means the total weight of a vehicle or combination ofvehicles, including its load, transmitted to the road by its axles.Hitch Offset: The distance from the turn centre to the articulation point of the hitchingdevice or fifth wheel coupler used to tow the following vehicle.Interaxle Spacing: The distance between two axle units, determined by measuring fromthe centre of the last axle in the first axle group to the centre of the first axle of the nextaxle group.Kingpin Setback: The horizontal distance from the vertical axis through the centre ofthe kingpin to any point on the semi-trailer ahead of the kingpin including any load. Thismeasurement excludes any auxiliary equipment attached to the front of the semi-trailerthat is not designed for the transport of goods.Lift Axle: An axle controlled by a device designed for raising or lowering a single axleunit or for varying the load on an axle unit.ii
Maximum Weights: All maximum axle weights are subject to minimum tire size. Themaximum weight per tire shall not exceed the lesser of the tire manufacturer’s weightrating or the width of the tire stamped on the sidewall multiplied by 10 kg/mm.Overall Height: The vertical distance between the surface of the road and the highestpoint on a vehicle or combination of vehicles, including load.Overall Length: The distance from the foremost point of a vehicle or combination ofvehicles to the rearmost point of the vehicle or combination of vehicles, including load.Auxiliary equipment is not included in this measurement.Overall Width: The widest dimension of a vehicle or combination of vehicles, includingload and auxiliary equipment.Pony Trailer: A vehicle without motive power that is equipped with a rigid drawbar andis designed to be towed by another vehicle and is designed to carry all or most of itsgross vehicle weight on its axles.RTAC: (Acronym for “Road Transportation Association of Canada, now known asTransportation Association of Canada or “TAC”.) RTAC is one of the weight loading classifications on Manitoba’s Highways. RTAChighways are allowed more weight than A1 and B1 classified highways.Rear Effective Overhang: The distance from the turn centre of the last axle unit to therearmost point including load on the truck, trailer or semi-trailer.Semi-Trailer: A trailer designed so that a substantial part of its weight and load rests onand is carried by the truck tractor, another semi-trailer or a trailer converter dolly whichit is attached by a fifth wheel coupler.Single Axle: One axle or two consecutive axles having an axle spread of less than 1.0 m.Steering Axle: The articulated axle or axle group of a vehicle that is controlled by thedriver in managing the direction travelled by the vehicle, or an articulated axle on atrailer or semi-trailer where the direction of travel of the trailer is controlled by thetowing unit.Tandem Axle: Two or more equally spaced consecutive axles, having an axle spread ofnot less than 1.0 m but not more than 1.85 m, that are designed to automaticallydistribute the load.iii
Track Width: The distance from the outside face of the outermost tire on one end of anaxle to the outside face of the outermost tire on the axle’s opposite end, measured atany point above the lowest point of the rim.Trailer Converter Dolly: A vehicle without motive power that is designed to be used toconvert a semi-trailer to a full trailer, and has one or more axles, the lower half of a fifthwheel coupler, and a drawbar assembly.Tridem Axle: Three equally spaced consecutive axles, having an axle spread of not lessthan 2.4 m but not more than 3.7 m, which are designed to automatically distribute theload.Tridem Drive Axle Group: A tridem axle group in which all three axles are connected toa power source that transmits tractive power to all wheels on those axles.Trailer Length: on a pony trailer, applies to the distance measured from the articulation point of thehitching device to the rear of the pony trailer or any load carried on the trailer,whichever is the greater distance from the front of the pony trailer, or on a full trailer, is the distance measured from the front of the trailer, excluding anyauxiliary equipment attached to the front of the full trailer to the rear of the fulltrailer or any load carried on the trailer whichever is the greater distance from thefront of the full trailer, or on a semi-trailer, is the distance measured from the front of the semi-trailer,excluding any auxiliary equipment attached to the front of the semi-trailer that is notdesigned for the transportation of goods, to the rear of the semi-trailer or any loadcarried on it, whichever is the greater distance from the front of the semi-trailer.Truck Tractor: A motor vehicle having a net weight of more than 4000 kg, and equippedwith the lower half of a fifth wheel coupler designed to be used to pull a semi-trailer bycoupling to the kingpin attached to the semi-trailer.Wheelbase: As it applies to a full trailer, is the distance from the centre of the trailer’s turntable to the trailer’sturn centre, a pony trailer, is the distance from the centre of the trailer’s hitching device to thetrailer’s turn centre, a semi-trailer, is the distance from the centre of the trailer’s kingpin to the trailer’sturn centre, a truck, truck tractor, bus or motor home, is the distance from the centre of thevehicle’s steering axle unit to the vehicle’s turn centre.iv
Wide-Base Single Tire: A non-steering tire that has a width of 445 mm or greater andmeets the requirements of the Motor Vehicle Tire Safety Regulations, 1995 (Canada).Width of Tire: Means the width of the tire as customarily measured and rated bymanufacturers of motor vehicles and tires (the amount of space across the tread patternfrom sidewall to sidewall).Wildlife bumper: A heavy duty bumper or device designed to reduce the impact ofwildlife collisions that is mounted on the front of a truck or truck tractor.v
Units of Measure Used in this GuideFor descriptions of the measures used above, please see “Terms Used in this Guide.”vi
Auxiliary DevicesFor descriptions of wildlife bumpers and aerodynamic devices, please see “Terms Used in thisGuide.”Conversions: Imperial/MetricMetric to Imperial1 kg 2.2046 pounds1 m 3.2808 feet1 m 39.37 inchesImperial to Metric1 pound 0.4536 kg1 foot 0.3048 m 304.8 mm1 inch 0.0254 m 25.4 mmvii
Wide-base Single Tire ChartWeight for axle groups other than steer axlesMaximum Wide Base Single TireWeightRTACClass A1Class B1Maximum per tireN/A3,850 kgSingle Axle Maximum9,100 kg7,700 kgTandem Axle UnitTandem Axle Maximum17,000 kg15,200 kgTridem Semi-trailer Axle UnitAxle spread 2.4 m to less than 3.0 m21,000 kg20,000 kgAxle spread 3.0 m to less than 3.6 m23,000 kg122,000 kgAxle spread 3.6 m to 3.7 m24,000 kg22,000 kgTridem Drive Axle UnitAxle spread 2.4 m to less than 2.7 m21,000 kg20,000 kgAxle spread 2.7 m to 2.8 m22,000 kg20,000 kgTridem Drive Axle Unit (on a vehicle with a tandem steer axle group)Axle spread 2.4 m to less than 2.7m*21,000 kg20,000 kgAxle spread 2.7 m to less than 3.0 m**22,000 kg20,000 kgAxle spread 3.0 m to 3.1 m***22,000 kg20,000 kg3,850 kg7,700 kg13,800 kg19,000 kg19,000 kg19,000 kg19,000 kg19,000 kg19,000 kg19,000 kg19,000 kg1A trailer tridem axle group with an axle spread of 3.0 m or more but less than 3.6 m is allowed 24000 kgon routes with a designated maximum GVW of 63500 kg.******Requires a minimum wheelbase of 7.7 mRequires a minimum wheelbase of 7.8 mRequires a minimum wheelbase of 7.9 mNote: Refer to Section 11 of M.R. 155/2018 for track width on semi trailers, pony trailers and full trailersequipped with wide-base single tires.viii
Vehicle Weight and Dimension Limits in ManitobaLEGAL CONFIGURATIONS IN MANITOBAIn the event of any discrepancy between this Weights and Dimensions Guide and theHighway Traffic Act (HTA) or the Vehicle Weights and Dimensions on Classes of HighwaysRegulation (MR 155/2018), the HTA and MR 155/2018 will take precedence.1 Page
Vehicle Weight and Dimension Limits in ManitobaSINGLE STEER TRUCK TRACTOR/TRAILER COMBINATIONDIMENSIONOverall LengthOverall WidthOverall HeightTractorWheelbaseTandem Axle SpreadSemi TrailerBox LengthWheelbase1Single, Tandem or Tridem Axle GroupKingpin SetbackRear Effective OverhangTandem Axle SpreadTridem Axle SpreadTrack Width2Interaxle SpacingSteering Axle to Drive AxleTandem Axle to Tandem AxleTandem Axle to Tridem Axle2 PageLIMITMaximum 23.0 mMaximum 2.6 mMaximum 4.15 mMaximum 7.2 m*Minimum 1.0 m/Maximum 1.85 mMaximum 16.2 mMinimum 6.25 m/Maximum 12.5 m*Minimum 6.25 m/Maximum 12.5 m*Maximum 2.0 m radiusMaximum 35% of wheelbaseMinimum 1.0 m/Maximum 1.85 mMinimum 2.4 m/Maximum 3.7 mMinimum 2.5 m/Maximum 2.6 mMinimum 3.0 mMinimum 5.0 mMinimum 5.5 m
Vehicle Weight and Dimension Limits in ManitobaSINGLE STEER TRUCK TRACTOR/TRAILER COMBINATION (continued)MAXIMUM WEIGHTRTACClass A1Class B1TractorSteering Axle6000 kg6000 kg6000 kg3Single Axle (dual tires)9100 kg9100 kg8200 kgTandem Axle:Axle Spread 1.0 m - 1.85 m17000 kg16000 kg14500 kgSemi TrailerSingle Axle (dual tires)9100 kg9100 kg8200 kgTandem Axle:Axle Spread 1.0 m - 1.85 m17000 kg16000 kg14500 kgTridem Axle:Axle Spread 2.4 m to less than 3.0 m21000 kg21000 kg20000 kgAxle Spread 3.0 m to less than 3.6 m23000 kg423000 kg20000 kgAxle Spread 3.6 m to 3.7 m24000 kg23000 kg20000 kgMaximum Gross Vehicle Weight Limits (Combination)3 Axles24200 kg24200 kg22400 kg4 Axles32100 kg31100 kg28700 kg5 Axles40000 kg38000 kg35000 kg6 Axle with Tridem Semi Trailer:Axle Spread 2.4 m to less than 3.0 m44000 kg43000 kg40500 kgAxle Spread 3.0 m to less than 3.6 m46000 kg45000 kg40500 kgAxle Spread 3.6 m to 3.7 m47000 kg45000 kg40500 kg1In the case of a truck tractor coupled to a semi trailer equipped with a single axle, the wheelbase of the semitrailer is not controlled.2Semi trailers manufactured prior to July 1, 1988 that have not had their axle units totally replaced may have atrack width of less than 2.5 m. Refer to Section 11 of M.R. 155/2018 for track width on semi trailers, ponytrailers and full trailers equipped with wide-base single tires.3Semi trailers equipped with two single axle units with an interaxle spacing of 1.86 m to 3.70 m inclusivecannot exceed the maximum allowable gross axle weight for a single axle unit.3 Page
Vehicle Weight and Dimension Limits in Manitoba4Atrailer tridem axle group with an axle spread of 3.0 m or more but less than 3.6 m is allowed 24000 kg onroutes with a designated maximum GVW of 63500 kg.*For truck tractor wheelbase exceeding 6.2 m to not more than 7.2 m refer to maximum semi-trailerwheelbase chartTractorWheelbase (m)Max TrailerWheelbase (m)TractorWheelbase (m)Max TrailerWheelbase (m)Up to 6.212.50over 6.7 to 6.812.13over 6.2 to 6.312.47over 6.8 to 6.912.07over 6.3 to 6.412.40over 6.9 to 7.012.00over 6.4 to 6.512.33over 7.0 to 7.111.93over 6.5 to 6.612.27over 7.1 to 7.211.87over 6.6 to 6.74 Page12.20
Vehicle Weight and Dimension Limits in ManitobaTRIDEM DRIVE TRUCK TRACTOR/TRAILER COMBINATIONDIMENSIONOverall LengthOverall WidthOverall HeightTractorWheelbaseTridem Drive Axle Spread4Tridem Drive Axle Track WidthSemi Trailer5Box LengthWheelbase Single, Tandem or Tridem1Kingpin SetbackRear Effective OverhangTandem Axle SpreadTridem Axle SpreadTrack Width2Interaxle SpacingSteering Axle to Drive AxleTridem Axle to Tandem AxleTridem Axle to Tridem Axle5 PageLIMITMaximum 23.5 mMaximum 2.6 mMaximum 4.15 mMinimum 6.6 m/Maximum 7.2 mMinimum 2.4 m/Maximum 2.8 mMinimum 2.5 m/Maximum 2.6 mMaximum 16.2 mMinimum 6.25 m/Maximum 12.27 mMaximum 2.0 m radiusMaximum 35% of wheelbaseMinimum 1.0 m/Maximum 1.85 mMinimum 2.4 m/Maximum 3.7 mMinimum 2.5 m/Maximum 2.6 mMinimum 3.0 mMinimum 5.5 mMinimum 6.0 m
Vehicle Weight and Dimension Limits in ManitobaTridem Drive Truck Tractor/TRAILER COMBINATION (continued)MAXIMUM WEIGHTRTACClass A1Class B1TractorSteering Axle67300 kg7300 kg7300 kgTridem Drive Axle (tractor)Drive Axle Spread 2.4 m to less than 2.7 m21000 kg21000 kg20000 kgDrive Axle Spread 2.7 m - 2.8 m22000 kg21000 kg20000 kgSemi TrailerSingle Axle (dual tires)39100 kg9100 kg8200 kgTandem Axle:Axle Spread 1.0 m - 1.85 m17000 kg16000 kg14500 kgTridem AxleAxle Spread 2.4 m to less than 3.0 m21000 kg21000 kg20000 kg7Axle Spread 3.0 m to less than 3.6 m23000 kg23000 kg20000 kgAxle Spread 3.6 m to 3.7 m24000 kg23000 kg20000 kgMaximum Gross Vehicle Weight Limits (Combination)5 Axles38400 kg37400 kg35500 kg6 Axles46300 kg44300 kg41800 kg7 Axles53300 kg51300 kg47300 kg1In the case of a truck tractor coupled to a semi trailer equipped with a single axle, the wheelbase of the semitrailer is Not controlled.2Semi trailers manufactured prior to July 1, 1988 that have not had their axle units totally replaced may have atrack width of less than 2.5 m. Refer to Section 11 of M.R. 155/2018 for track width on semi trailers, ponytrailers and full trailers equipped with wide-base single tires.3Semi trailers equipped with two single axle units with an interaxle spacing of 1.86 m to 3.70 m inclusivecannot exceed the maximum allowable gross axle weight for a single axle unit.4All three axles in tridem group must drive (no pusher, tag or lift axles allowed). Drive axle locking devicesmust be unlocked while operating on a highway.5Semi trailer may be equipped with a single, tandem or tridem axle.6Minimum 27% of drive axle weight at all times - maximum 7300 kg.6 Page
Vehicle Weight and Dimension Limits in Manitoba7Atrailer tridem axle group with an axle spread of 3.0 m or more but less than 3.6 m is allowed 24000 kg onroutes with a designated maximum GVW of 63500 kg.*For tridem drive truck tractor wheelbase exceeding 6.6 m to not more than 7.2 m refer to maximum semitrailer wheelbase chart below7 PageTractorWheelbase (m)Max TrailerWheelbase (m)TractorWheelbase (m)Max TrailerWheelbase (m)6.612.27over 6.9 to 7.012.00over 6.6 to 6.712.20over 7.0 to 7.111.93over 6.7 to 6.812.13over 7.1 to 7.211.87over 6.8 to 6.912.07
Vehicle Weight and Dimension Limits in ManitobaA-TRAINDIMENSIONLIMITOverall LengthOverall WidthOverall HeightBox LengthTractorWheelbase - single or tandem driveMaximum 25.0 mMaximum 2.6 mMaximum 4.15 mMaximum 20.0 mWheelbase – tridem driveTandem Axle SpreadMinimum 6.6 m/Maximum 7.2 mMinimum 1.0 m/Maximum 1.85 mInteraxle SpacingLead Semi Trailer1WheelbaseKingpin SetbackTandem Axle SpreadHitch OffsetTrack Width2Rear Effective OverhangSecond Semi Trailer or Full TrailerWheelbaseTandem Axle SpreadTrack WidthRear Effective OverhangInteraxle SpacingsSteering Axle to Drive AxleSingle Axle to Single or Tandem Axle3Minimum 3.0 m8 PageMaximum 7.2 mMinimum 6.25 mMaximum 2.0 m radiusMinimum 1.0 m/Maximum 1.85 mMaximum 1.8 mMinimum 2.5 m/Maximum 2.6 mMaximum 35% of trailer wheelbaseMinimum 6.25 mMinimum 1.0 m/Maximum 1.85 mMinimum 2.5 m/Maximum 2.6 mMaximum 35% of trailer wheelbaseMinimum 3.0 mMinimum 3.0 m
Vehicle Weight and Dimension Limits in ManitobaSingle Axle to Tridem Axle3Tandem Axle to Tandem AxleTandem Axle to Tridem AxleTridem Axle to Tridem AxleDimension “A” - (from the centre of last axle on the leadSemi Trailer to the centre of the first axle on the converterdolly or second trailer)9 PageMinimum 3.0 mMinimum 5.0 mMinimum 5.5 mMinimum 6.0 mNot controlled
Vehicle Weight and Dimension Limits in ManitobaA-train with Tandem Drive Axle (continued)MAXIMUM WEIGHTRTACClass A1Class B1TractorSteering Axle6000 kg6000 kg6000 kgTandem Axle:Axle Spread 1.0 m - 1.85 m17000 kg16000 kg14500 kgSemi TrailerSingle Axle (dual tires)9100 kg9100 kg8200 kgTandem Axle:Axle Spread 1.0 m - 1.85 m17000 kg16000 kg14500 kgTridem Axle:Axle Spread 2.4 m to less than 3.0 m21000 kg21000 kg20000 kg7Axle Spread 3.0 m to less than 3.6 m23000 kg23000 kg20000 kgAxle Spread 3.6 m to 3.7 m24000 kg23000 kg20000 kg4Maximum Gross Vehicle Weight Limits (Combination)5 Axles42400 kg42400 kg38800 kg6 Axles50300 kg49300 kg45100 kg7 Axles53500 kg53500 kg47630 kg8 Axles53500 kg53500 kg47630 kgWeight Restriction 1: Sum of axleIf Dimension “A” is less than 3 metres, the weight of the axle(s)weights of lead semi trailer plus weight on the lead semi trailer plus the weight of the converter dollyof converter dolly axleaxle(s) is limited to a maximum of 17000 kg for a two axle groupor a maximum of 23000 kg for a three axle group.Weight Restriction 2: Sum of axleThe weight of the second trailer must not exceed the weight ofweights of full trailer or second semithe drive axle(s) plus the weight of the axle(s) on the first semitrailertrailer.10 P a g e
Vehicle Weight and Dimension Limits in ManitobaA-train with Tridem Drive Axle (continued)MAXIMUM WEIGHTRTACClass A1Class B1TractorSteering Axle57300 kg7300 kg7300 kgWheelbaseMinimum 6.6 m/Maximum 7.2 mTridem Drive Axle SpreadMinimum 2.4 m/Maximum 2.8 mTridem Drive Axle Track WidthMinimum 2.5m/Maximum 2.6m6Tridem Drive Axle (tractor)Drive Axle Spread 2.4 m to less than 2.7 m21000 kg21000 kg20000 kgDrive Axle Spread 2.7 m - 2.8 m22000 kg21000 kg20000 kgSemi TrailerSingle Axle (dual tires)9100 kg9100 kg8200 kgTandem AxleAxle Spread 1.0 m - 1.85 m17000 kg16000 kg14500 kgTridem AxleAxle Spread 2.4 m to less than 3.0 m21000 kg21000 kg20000 kgAxle Spread 3.0 m to less than 3.6 m23000 kg723000 kg20000 kgAxle Spread 3.6 m to 3.7 m24000 kg23000 kg20000 kgMaximum Gross Vehicle Weight Limits (Combination)7 Axles53500 kg53500 kg47630 kg8 Axles53500 kg53500 kg47630 kg1 Semi trailers equipped with two single axle units with an interaxle spacing of 1.86 m to 3.70 m inclusivecannot exceed the maximum allowable gross axle weight for a single axle unit.2Semi trailers manufactured prior to July 1, 1988 that have not had their axle units totally replaced may have atrack width of less than 2.5 m. Refer to Section 11 of M.R. 155/2018 for track width on semi trailers, ponytrailers and full trailers equipped with wide-base single tires.3This minimum applies to the interaxle spacing between the axle unit on a semi trailer and the adjacent axleunit on a trailer converter dolly. Spacing less than 3.0 m is allowed provided: the sum of the weights of a singleaxle semi trailer and the converter dolly does not exceed the maximum allowable gross axle weight of atandem axle unit; the sum of the weights of a tandem axle semi trailer and the converter dolly does notexceed the maximum allowable gross axle weight of a tridem axle unit with an axle spread of 3.0 m to lessthan 3.6 m. The use of a trailer converter dolly equipped with a tandem or tridem axle is not permitted.11 P a g e
Vehicle Weight and Dimension Limits in Manitoba4A-Trainswith trailer equipment manufactured prior to July 1, 1988 are allowed a maximum allowable grossvehicle weight of 56,500 kg.5Minimum 27% of drive axle weight at all times - maximum 7300 kg.6All three axles in tridem group must drive (no pusher, tag or lift axles allowed). Drive axle locking devicesmust be unlocked while operating on a highway.7A trailer tridem axle group with an axle spread of 3.0 m or more but less than 3.6 m is allowed 24000 kg onroutes with a designated maximum GVW of 63500 kg.12 P a g e
Vehicle Weight and Dimension Limits in ManitobaB-trainDIMENSIONLength1OverallOverall WidthOverall HeightBox LengthTractorWheelbase – single or tandem driveWheelbase – tridem driveTandem Axle SpreadLead Semi TrailerWheelbaseKingpin SetbackTandem Axle SpreadTridem Axle SpreadTrack Width2Fifth Wheel PositionSecond Semi TrailerWheelbaseKingpin SetbackTandem Axle SpreadTridem Axle SpreadTrack WidthSum of Semi Trailer Wheelbases13 P a g eLIMITMaximum 27.5 mMaximum 2.6 mMaximum 4.15 mMaximum 20.0 mMaximum 6.2 mMinimum 6.6 m/Maximum 7.2 mMinimum 1.0 m/Maximum 1.85 mMinimum 6.25 mMaximum 2.0 m radiusMinimum 1.0 m/Maximum 1.85 mMinimum 2.4 m/Maximum 3.1 mMinimum 2.5 m/Maximum 2.6 mNo more than 0.3 m behind the centre of the rearmostaxle on the Semi TrailerMinimum 6.25 mMaximum 2.0 m radiusMinimum 1.0 m/Maximum 1.85 mMinimum 2.4 m/Maximum 3.1 mMinimum 2.5 m/Maximum 2.6 mMaximum 17.0 m*
Vehicle Weight and Dimension Limits in ManitobaInteraxle SpacingsSteering Axle to Drive AxleMinimum 3.0 mTandem Axle to Tandem AxleMinimum 5.0 mTandem Axle to Tridem AxleMinimum 5.5 mTridem Axle to Tridem AxleMinimum 6.0 m*For truck tractor wheelbase exceeding 6.2 m to not more than 6.8 m refer to maximum semi-trailerwheelbase chart14 P a g eTractorWheelbase (m)Max TrailerWheelbase (m)Up to 6.217.00over 6.2 to 6.316.53over 6.3 to 6.416.44over 6.41 to 6.516.36over 6.5 to 6.616.27over 6.6 to 6.716.19over 6.7 to 6.816.10
Vehicle Weight and Dimension Limits in ManitobaB-train with Tandem Drive Axle (continued)MAXIMUM WEIGHTRTACTractorSteering Axle6000 kgSingle Axle (dual tires)9100 kgTandem Axle:Axle Spread 1.0 m - 1.85 m17000 kgSemi TrailerSingle Axle (dual tires)39100 kgTandem AxleAxle Spread 1.0 m - 1.85 m17000 kgTridem AxleAxle Spread 2.4 m to less than 3.0 m21000 kgAxle Spread 3.0 m to less than 3.6 m23000 kg4Axle Spread 3.6 m to 3.7 m24000 kgMaximum Gross Vehicle Weight Limits (Combination)5 Axles41200 kg6 Axles49100 kg7 Axles57000 kg8 Axles62500 kg4More than 8 Axles62500 kg415 P a g eA1B16000 kg9100 kg6000 kg8200 kg16000 kg14500 kg9100 kg8200 kg16000 kg14500 kg21000 kg23000 kg23000 kg20000 kg20000 kg20000 kg40200 kg47100 kg54000 kg56500 kg56500 kg36900 kg43200 kg47630 kg47630 kg47630 kg
Vehicle Weight and Dimension Limits in ManitobaB-train with Tridem Drive Axle (continued)MAXIMUM WEIGHTRTACClass A1Class B1TractorSteering Axle57300 kg7300 kg7300 kg6Tridem Drive Axle (tractor)Drive Axle Spread 2.4 m to less than 2.7 m21000 kg21000 kg20000 kgDrive Axle Spread 2.7 m - 2.8 m22000 kg21000 kg20000 kgSemi TrailerSingle Axle (dual tires)9100 kg9100 kg8200 kgTandem AxleAxle Spread 1.0 m - 1.85 m17000 kg16000 kg14500 kgTridem AxleAxle Spread 2.4 m to less than 3.0 m21000 kg21000 kg20000 kg4Axle Spread 3.0 m to less than 3.6 m23000 kg23000 kg20000 kgAxle Spread 3.6 m to 3.7 m24000 kg23000 kg20000 kgMaximum Gross Vehicle Weight Limits (Combination)7 Axles55400 kg53400 kg47630 kg48 Axles62500 kg56500 kg47630 kg4More than 8 Axles62500 kg56500 kg47630 kg1Overall length on a B-train includes any auxiliary device designed to reduce the impact of wildlife collisions.2Semi trailers manufactured prior to July 1, 1988 that have not had their axle units totally replaced may have atrack width of less than 2.5 m. Refer to Section 11 of M.R. 155/2018 for track width on semi trailers, ponytrailers and full trailers equipped with wide-base single tires.3Semi trailers equipped with two single axle units with an interaxle spacing of 1.86 m to 3.70 m inclusivecannot exceed the maximum allowable gross axle weight for a single axle unit.4A trailer tridem axle group with an axle spread of 3.0 m or more but less than 3.6 m is allowed 24000 kg onroutes with a designated maximum GVW of 63500 kg.5Minimum 27% of drive axle weight at all times - maximum 7300 kg.6All three axles in tridem group must drive (no pusher, tag or lift axles allowed). Drive axle locking devicesmust be unlocked while operating on a highway.16 P a g e
Vehicle Weight and Dimension Limits in ManitobaC-TRAINDIMENSIONOverall LengthOverall WidthOverall HeightBox LengthTractorWheelbase – single or tandem driveWheelbase – tridem driveTandem Axle SpreadLead Semi TrailerWheelbaseKingpin SetbackTandem Axle SpreadHitch OffsetTrack Width1Rear Effective OverhangSecond Semi Trailer or Full TrailerWheelbaseTandem Axle SpreadTrack Width1Drawbar Length17 P a g eLIMITMaximum 25.0mMaximum 2.6 mMaximum 4.15 mMaximum 20.0 mMaximum 7.2 mMinimum 6.6 m/Maximum 7.2 mMinimum 1.0 m/Maximum 1.85 mMinimum 6.25 mMaximum 2.0 m radiusMinimum 1.0 m/Maximum 1.85 mMaximum 1.8 mMinimum 2.5 m/Maximum 2.6 mMaximum 35% of trailer wheelbaseMinimum 6.25 mMinimum 1.0 m/Maximum 1.85 mMinimum 2.5 m/Maximum 2.6 mMaximum 2.4 m
Vehicle Weight and Dimension Limits in ManitobaInteraxle SpacingsSteering Axle to Drive AxleSingle Axle to Single or Tandem Axle2Single Axle to Tridem Axle2Tandem Axle to Tandem AxleTandem Axle to Tridem AxleTridem Axle to Tridem AxleDimension "A" (from the centre of last axle on the leadSemi Trailer to centre of the first axle on the converter dollyor second trailer)18 P a g eMinimum 3.0 mMinimum 3.0 mMinimum 3.0 mMinimum 5.0 mMinimum 5.5 mMinimum 6.0 mNot controlled
Vehicle Weight and Dimension Limits in ManitobaC-train with Tandem Drive Axle (continued)MAXIMUM WEIGHTRTACClass A1Class B1TractorSteering Axle6000 kg6000 kg6000 kgSingle Axle9100 kg9100 kg8200 kgTandem AxleAxle Spread 1.0 m - 1.85 m17000 kg16000 kg14500 kgSemi TrailerSingle Axle39100 kg9100 kg8200 kgTandem AxleAxle Spread 1.0 m - 1.85 m17000 kg16000 kg14500 kgTridem AxleAxle Spread 2.4 m – less than 3.021000 kg21000 kg20000 kgm Spread 3.0 m – less than 3.6Axle23000 kg23000 kg20000 kgm Spread 3.6 m – 3.7 mAxle24000 kg23000 kg20000 kgSum of Lead Trailer & C-Dolly23000 kg23000 kg22700 kgMaximum Gross Vehicle Weight Limits (Combination)45 Axles42400 kg42400 kg38800 kg6 Axles50300 kg49300 kg45100 kg7 Axles53500 kg53500 kg47630 kg8 Axles53
Vehicle Weight and Dimension Limits in Manitoba February 12, 2021 In the event of any discrepancy between this Weights and Dimensions Guide and the Highway Traffic Act (HTA) or the Vehicle Weights and Dimensions on Classes of Highways Regulation (MR 155/2018), the HTA and MR 155/2018 will take precedence.
