​Operation Expected to Save Drivers Up to 30 Minutes on Morning Commute 

(February 19, 2026) – The Maryland Department of Transportation State Highway Administration will make new ramp meters fully operational on 16 ramps to northbound I-270 in Frederick and Montgomery counties beginning Tuesday, February 24, weather permitting.

Ramp metering is a part of the I-270 Innovative Congestion Management (ICM) Project, an effort to reduce recurring congestion and improve travel time reliability along the heavily traveled 34.4-mile corridor between I-70 in Frederick County and I-495 (Capital Beltway) in Montgomery County.

When ramp metering is in operation, motorists will encounter advance warning signs with flashing beacons indicating the signals are active. Drivers on ramps merging onto I-270 should be prepared to stop at the marked stop line on the ramp. When the signal turns green, motorists may proceed and merge onto I-270. 

The ramp metering signals are intended to release one vehicle at a time from each lane, improving overall traffic flow, and can operate between 4 a.m. and 11 p.m. daily. They are anticipated to be active during peak travel periods or when congestion is present on I-270. Once fully operational, the ramp meters are expected to save some drivers up to 30 minutes during the morning commute.

 

The I-270 ICM Project addresses 14 major bottlenecks along the corridor and added 23 new lane miles, more than 25 real-time traffic communication signs and more than 30 intelligent traffic signals that work together to manage traffic conditions. Developed using a progressive design-build approach, the project was awarded the Best Transportation Systems Management and Operations Project in the nation in 2023 by the National Operations Center of Excellence.

“This project is just one example of how technology and innovative solutions can reduce congestion and make a safer, more reliable commute for tens of thousands of Marylanders every day,” said State Highway Administrator Will Pines.

Currently, the I-270 corridor carries between 79,400 and 261,200 vehicles each day. By 2030, daily traffic volumes are projected to increase to 107,000 and 290,000 vehicles. Implementing innovative congestion management strategies is critical to improving safety, reducing delays and maintaining reliable travel for commuters, freight and emergency responders.

The I-270 ICM Project is consistent with the Maryland Department of Transportation’s Serious About Safety initiative, a department-wide commitment to advance safety improvements and save lives. Completion of the project provides congestion relief while enhancing safety and mobility for travelers in Frederick and Montgomery counties. These improvements also support economic growth throughout the Washington metropolitan region by making daily travel more predictable and efficient. 

For more project details, visit the I-270 ICM Project Portal page.

The State Highway Administration appreciates customers’ patience as crews work to improve Maryland’s transportation system. Motorists are asked to stay alert, stay focused and be aware of reduced speed limits and changing driving patterns. Slow down and move over in work zones. It’s the law.