Minnesota Department of Transportation

511 Travel Info

News Release

June 17, 2013

Orange barrels on a highway

New Moorhead traffic signals include flashing yellow arrows

DETROIT LAKES, Minn. — Motorists in Moorhead will encounter a new traffic signal design that minimizes unnecessary waiting and improves safety.

Several new signals along Highway 10 will feature a flashing yellow arrow. When illuminated, the flashing yellow arrow allows motorists to make a left turn after yielding to oncoming traffic. Otherwise, the new traffic signals work the same as traditional signals.

The first new signal began operating today, June 17, at Main Avenue and Sixth Street. Crews will install additional flashing yellow arrows as work in Moorhead progresses. Signal timings may change when the project is complete.

After extensive testing, the Federal Highway Administration authorized the use of flashing yellow arrow in 2009. The Minnesota Department of Transportation began installing the systems in 2010.

A study by the National Cooperative Highway Research Program determined that drivers had fewer crashes with flashing yellow left-turn arrows than with traditional yield-on-green signal configurations.

To read more about the new flashing yellow arrow signals, visit:


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