Skip to main content

Stay Informed

Sign up for updates and alerts from the Maryland Transportation Authority

The Transport of Hazardous Materials Across our Toll Facilities

Code of Maryland Regulations (COMAR) govern the transport of hazardous materials across our toll facilities. Under these regulations, vehicles carrying bottled propane gas in excess of 10 pounds per container (maximum of 10 containers), bulk gasoline, explosives, significant amounts of radioactive materials, and other hazardous materials are prohibited from using the Fort McHenry Tunnel (I-95) or the Baltimore Harbor Tunnel (I-895). The Francis Scott Key Bridge (I-695, the Baltimore Beltway) is a convenient alternative route for crossing Baltimore's Harbor.

Visit the Division of State Documents' website at to view the actual COMAR regulations: Title 11, Subtitle 7, Chapter 1 (11.07.01).

Oversize and/or Overweight Permit Process

Beginning May 1, 2009, the State Highway Administration (SHA) will administer a $25 permit fee on behalf of the Maryland Transportation Authority for the use of Authority maintained roadways. The $25 fee will cover all Authority roadways that may be used on the vehicle's identified permit route. The fee is applicable to the permit only and does not apply to any tolls incurred. SHA will also be administering the engineering fee for superload moves on Authority roadways to further enhance the permit process. When applicable, the Authority engineering fee will be assessed by SHA and appear on the permit as part of the total cost. These fees will be in addition to any fees already imposed by SHA for the use of state highways it maintains and will be assessed on any permits for travel scheduled May 1 or later.

In addition, the current Class 7 toll will be eliminated effective May 1, 2009. Drivers who previously were charged a Class 7 toll will be charged a lower toll based on the number of vehicle axles. This allows for a single point of contact for permit requests and affords these drivers the convenience of E-ZPass for toll payment. These changes are part of the Authority's cost-recovery initiative that was approved Jan. 29, 2009, and will allow for a more effective hauling-permit system to process oversize and/or overweight vehicles traveling on State maintained and Authority owned roadways. The new fee structure will help ensure the Authority continues to maintain safe and efficient facilities for its commercial-vehicle customers.

Visit SHA's Commercial Vehicle Operations website for more information on hauling permits at


Public Calendar

Dec 07

Finance Committee Meeting - December 7, 2023

9 AM

Virtual Public Meeting

This public meeting is livestreamed and archived on the Finance Committee Meeting Homepage. The Finance Committee Meeting homepage also provides access to the virtual meeting, schedule, agenda, materials and minutes.

Dec 10

DriveEzMD Team - Ravens Game at M&T Stadium

10 AM

M&T Stadium
1101 Russell Street
Between Lots B&C
Baltimore MD 21230

Our DriveEzMD Team is in your community! Come talk with us about everything tolling – E-ZPass, Pay-By-Plate & Video Tolling. Pick up an E-ZPass On the Go and save up to 77% on your toll trips.

Ravens VS Rams
10AM – 1PM

Ravens Mascot

Dec 14

MDTA Board Meeting - December 14, 2023

9 AM


This public meeting is livestreamed and archived on the MDTA Board Meeting Homepage. The MDTA Board Meeting homepage also provides access to the meeting schedule, materials, agenda and minutes.