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[INDOT - East Central] Flashing Yellow Arrow Signal Being Installed at 86th Street & I-465 (Indianapolis)
Start Date: 6/30/2014Start Time: 12:00 AM
End Date: 6/30/2014
Entry Description

Flashing Yellow Arrow Signal Being Installed at 86th Street Ramp to I-465

 

INDIANAPOLIS – The Indiana Department of Transportation (INDOT) plans to install a new left-turn signal on eastbound 86th Street that provides a flashing yellow arrow to turn onto the ramp to northbound I-465. This type of turn signal allows left-turning traffic to yield the right-of-way to oncoming vehicles and pedestrians and turn when a suitable gap is available.

 

On or after Tuesday, July 1, INDOT crews will install and activate the new left-turn signal from eastbound 86th Street to the northbound I-465 entrance ramp. Previously, drivers have only been able to turn left at this intersection with a protected green arrow.

 

National research has shown that the flashing yellow signal is more intuitive for drivers, results in fewer crashes and moves traffic more efficiently. The signals are being introduced nationwide and have been adopted by most states.

 

The new signal improves intersection efficiency by using cross-traffic gaps for more left turns. When waiting in a dedicated left-turn lane, traffic may first see a flashing yellow arrow, depending upon signal phasing. Should there not be suitable gaps in oncoming through traffic and sensors embedded in the left turn lane detect cars waiting, the flashing yellow arrow could change to a steady green arrow. This would stop oncoming through traffic, allowing a “lagging” protected left turn at the end of the signal cycle.

 

INDOT plans to replace most of its five-section or “doghouse” left-turn signals with the new four-section signals featuring a flashing yellow arrow. The protected left turn with steady green and steady yellow arrows will continue to be used when it is difficult to find or judge gaps in oncoming through traffic.

 

The steady yellow left-turn arrow retains its standard meaning that the signal is about to change to a steady red arrow and drivers should prepare to stop or, if they have already entered the intersection, complete the left turn. These types of signals are only used on intersection approaches with dedicated left-turn lanes, which clear the way for through and right-turning traffic.

 

More information about the flashing yellow left-turn arrow is available on INDOT’s web site at www.in.gov/indot/3202.htm.

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