Motorists traveling on Interstate 465 on the southeast side of Indianapolis will soon see variable speed limits, or VSLs, in place.
Speed limits will adjust based on real-time conditions like traffic, roadway incidents, work zones, and weather conditions. Variable speed limits are expected to begin along the corridor on or after Tuesday, according to a news release from the Indiana Department of Transportation.
Speed limits will be dropped or increased in increments of 5 mph, as conditions warrant, to improve safety and traffic flow. Variable speed limits help manage traffic congestion with fewer stop-and-go situations and a more consistent flow of traffic, reducing travel time for all drivers, INDOT officials say.
The VSL signs are already in place, with digital signage posted every half mile on both sides of I-465. The standard 55 mph speed limit is currently posted and will be adjusted in 5 mph increments, as needed, based on conditions. Speed limits may be reduced to as low as 35 mph if conditions warrant.
Law enforcement officers are empowered to enforce the posted speed limit, INDOT officials say.
VSLs and the new signs are part of INDOT’s I-465 SE Transportation Systems Management Operations, or TSMO, project. TSMO is a set of strategies that focuses on operational improvements to maximize the efficiency and safety of existing transportation systems, especially in urban areas, INDOT officials say.
The project is using TSMO strategies to smoother travel on I-465 on the southeast side. The stretch of highway experiences congestion during peak travel times contributing to high crash rates.
Additional improvements under TMSO include ramp metering and dynamic message signs. Both of these are already in place, according to INDOT.
Search the internet for INDOT TSMO to learn more.
