In The United States
A number of highways in the United States have variable message signs and variable speed limits. The New Jersey Turnpike has been using active signage since the 1960s, though systems have evolved over time as they have been deployed in other areas of the country. A modern implementation of active traffic management was activated in 2010 using IRIS on Interstate 35W in Minneapolis, Minnesota and its southern suburbs as part of the Urban Partnership Agreement. Active lane management on I-35W is being combined with high-occupancy toll lanes and will be joined by a bus rapid transitway. An ATM scheme was deployed on 10 August 2010 in Washington.
Read more about this topic: Active Traffic Management
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