INDIANAPOLIS — Drivers traveling on Interstate 465 on Indianapolis' southeast side will soon see the implementation of variable speed limits, INDOT announced Thursday. That means the speed limit will change depending on conditions. Here's what to know:
How do variable speed limits work?
INDOT says speed limits on the southeast side of the city will be adjusted based on "real-time conditions" such as traffic, incidents on the interstate, work zones and weather conditions.
Speed limits will be adjusted in 5 mph increments as conditions warrant, the department said. They could go as low as 35 mph if conditions warrant.
Digital variable speed limit (VSL) signs have already be placed every half mile on both sides of I-465. The standard speed limit of 55 mph will remain posted until the VSL rollout.
Where exactly will variable speed limits be in place?
The corridor for variable speed limits spans from I-65 on the south side to I-70 on the east side of Marion County, according to INDOT.
INDOT is considering adding them to parts of I-80/I-94 in northern Indiana as well.
Why are variable speed limits being introduced?
"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 said in a statement.
This is part of a larger strategy INDOT is introducing called "Transportation System Management Operations" (TSMO). Basically, they are ways that INDOT can introduce changes in real time to improve traffic safety and flow.
When will the variable speed limits begin?
INDOT says VSLs are expected to begin in the corridor on or after Tuesday, Sept. 10.
What else do you need to know?
Police will be enforcing the speed limits as they are adjusted, INDOT says, adding that "it's important for drivers to stay alert and responsive to changing road conditions and posted speed limits."