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Annual Mobility Performance

The State Highway Administration (SHA) highway system is the backbone of Maryland’s transportation system, providing mobility and access for people and goods from and through the State of Maryland. Mobility and Economy is one of six key performance areas (KPA) at SHA which aims to “Support Maryland Economy and Communities with Reliable Movement of People and Goods.”

SHA publishes the Maryland State Highway Annual Mobility Report to identify successes, challenges, and strategies being used to improve the transportation services SHA delivers to Marylanders and the traveling public. The intent is to inform the decision-makers, customers and staff at SHA to develop strategic multi-modal congestion management solutions for safe, efficient and reliable transportation of people and goods.


Click here to view the 2015 Mobility Report highlights

Click here to view Mobility Reports from previous years



The Annual Mobility Report addresses the following:

  • Mobility Trends
  • Mitigation Strategies

Mobility Trends

Annual Change Between 2014 and 2013

Traffic Volume are down

What are the Highway Volume trends?

General volume of traffic is measured by Vehicle Miles Traveled (VMT) and is defined as the number of vehicles times the distance that they traverse the network. VMT metrics establish the proper context by which the road network is being utilized by the general population for a specific period in time (typically annualized.)

Congestion Trends is up

Where is Congestion a problem?

Highway congestion occurs as a result of too many users trying to share common roadway segments at the same time. The impacts of a congested system are detrimental in several ways; from an individual user perspective to the commerce/economy and overall quality of life in the region.

Reliability Trends

Why is Reliability important?

Reliability focuses on the variability of travel time and speeds on freeways/expressways and serves as the primary measure of system stability. Reliability measures the impact of the non-recurring nature of congestion due to unforeseen circumstances - such as vehicles crashes and breakdowns, weather events and special social events.

Annual Change Between 2014 and 2013

Traffic Volume are down align=

What are the Highway Volume trends?

General volume of traffic is measured by Vehicle Miles Traveled (VMT) and is defined as the number of vehicles times the distance that they traverse the network. VMT metrics establish the proper context by which the road network is being utilized by the general population for a specific period in time (typically annualized.)

Congestion Trends is up

Where is Congestion a problem?

Highway congestion occurs as a result of too many users trying to share common roadway segments at the same time. The impacts of a congested system are detrimental in several ways; from an individual user perspective to the commerce/economy and overall quality of life in the region.

Reliability Trends

Why is Reliability important?

Reliability focuses on the variability of travel time and speeds on freeways/expressways and serves as the primary measure of system stability. Reliability measures the impact of the non-recurring nature of congestion due to unforeseen circumstances - such as vehicles crashes and breakdowns, weather events and special social events.

Mitigation Strategies

What is SHA doing to improve Mobility of our highway system?

SHA implements various projects, programs and policies to enhance mobility on it facilities Our approach includes:

CHART system Capital Improvements MDTA Toll Lanes Signal Systems Freight Policies Mode Choices

What is the outcome of SHA's Mobility Initiatives?

The mobility solutions implemented by SHA projects, programs and policies result in user cost savings for automobile and truck travel. In 2014, annual user savings included:


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