Blog Archives

Does the variable speed limit system on I-94 reduce crashes?

Two years ago, the Minnesota Department of Transportation (MnDOT) installed a series of electronic speed limit advisory signs over I-94 between Minneapolis and St. Paul. The variable speed limit (VSL) system is designed to reduce congestion and help prevent crashes by recommending lower speed limits to drivers during periods of high traffic.

Although the verdict on the system’s effects on I-94 congestion is still pending, a recent study by researchers at the U of M’s Minnesota Traffic Observatory found that the VSL system has not made a measurable impact on crashes in a crash-prone stretch of freeway in downtown Minneapolis.

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Posted in Intelligent Transportation Systems (ITS), Safety, Technology, Traffic operations, Transportation research, Uncategorized, Urban transportation

Identifying truck bottlenecks will help shape Minnesota’s freight investment

traffic Delays in freight shipments caused by highway bottlenecks can harm a region’s economy and productivity. It’s no surprise, then, that freight mobility is a key concern for many major metropolitan areas—and the Minneapolis–St. Paul metro area is no exception.

To improve freight management planning and guide infrastructure decision making, planners at the Minnesota Department of Transportation (MnDOT) realized that they needed performance data specific to heavy truck traffic.

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Posted in Freight, Planning, Traffic data, Transportation research, Urban transportation
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