Email - MdMotorCarrier@mdot.maryland.gov
The Motor Carrier Division (MCD), in cooperation with the Maryland State Police (MSP) Commercial Vehicle Enforcement Division (CVED), the Maryland Transportation Authority Police (MdTAP) Commercial Vehicle Safety Unit (CVSU) and allied law enforcement agencies certified to enforce motor carrier law is responsible for the safe movement of commercial motor vehicles (CMV) along Maryland highways. The MSP and MdTAP operate 13 TWIS with permanent scales and four additional stations that utilize portable scales to check CMV's for compliance with State and federal safety, as well as size and weight requirements. Seven sites utilize weigh-in-motion (WIM) devices to pre-screen for weight violations. Additional electronic screening for CMV credentialing (e.g. fuel tax and safety rating) is being deployed for increased efficiency and effectiveness in maintaining CMV safety.
For further information on the Truck Weigh and Inspection Program, call the Motor Carrier Division, 7491 Connelley Drive, Hanover, Maryland 21076, Telephone 410-582-5734.
For further information on the TWIS operated by the MSP, call the CVED at 410-694-6100. For stations operated by the MdTAP, call the CVSU 410-537-1126.
Based upon Maryland statistical data, 1.8 million trucks and commercial vehicles are weighed, and 95,000 vehicles are inspected each year. Overweight vehicles, in addition to being a potential safety hazard to highway traffic, strain existing pavement and the design life expectancy of roads and bridges. To minimize damage by excessively heavy vehicles, Maryland adopted the federal bridge formula and table, commonly known as the “Bridge Table,” which is detailed on page 102 in the Maryland Motor Carrier Handbook (PDF, 946Kb). Maryland utilizes platform scales and WIM equipment at its TWIS, and portable scales at pull-off locations and other sites.
The maximum allowable vehicle width in Maryland is 102 inches, except when prohibited by posted signs. The width of a vehicle includes any load that it carries, exclusive of safety and energy conservation devices, such as side mirrors, turn signal lamps, marker lamps, steps and handholds for entry and egress. For a detailed description of the Maryland vehicle width law, refer to Title 24, Subsection 102 of the Maryland Vehicle Law (locate these descriptions at the website of the Maryland General Assembly.
The vehicle and load height limit in Maryland is 13’ 6”. To obtain hauling permits for overwidth, overheight, or overweight vehicles, contact the Maryland Department of Transportation State Highway Administration (MDOT SHA), Motor Carrier Division, Hauling Permits Section at 410-582-5727 or toll-free (within Maryland only) 1-800-846-6435.
The length of a vehicle includes its front and rear bumpers and any part of its load that extends beyond the vehicle, but is exclusive of non-load bearing safety and energy conservation devices, such as marker lamps, steps and handhold for entry and egress, front-mounted refrigeration units, and front-mounted air compressors. Refer to the Maryland Vehicle Law Title 24, subsection 104.1 for a list of the different vehicle length limits in Maryland.
To obtain hauling permits for overwidth, overheight, or overweight vehicles, contact MDOT SHA, Motor Carrier Division, Hauling Permits Section at 410-582-5717 or 1-800-846-6435.
VirginiaVirginia State PoliceTruck Weigh Station491 Southlake Boulevard Richmond, VA 23236 804-378-3489
New JerseyNew Jersey State PoliceP.O. Box 7068West Trenton, NJ 08628-0068609-882-2000, ext. 2237
DelawareDelaware State PoliceP.O. Box 430Dover, DE 19903 302-378-5230
PennsylvaniaDepartment of TransportationMotor Carrier Division400 North Street, 6th FloorHarrisburg, PA 17120 717-787-7445
West VirginiaPublic Service CommissionP.O. Box 812Charleston, WV 25323304-340-0453 (safety)304-558-2881 (weight)
707 North Calvert Street
Baltimore, Maryland 21202-3601
Main Business Line – 410-545-0300
Safety Campaigns – 1-800-323-6742
For emergencies, call MDOT SHA's Statewide Operations Center at 410-582-5650.
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