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Chapter 9New Technologies

Traffic Signs 101November 20, 2014

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Traffic Signs 101

New Technologies– Wildlife Detection and Warning System

• Goal reduce the number of large wildlife vehicle crashes

• Detects large wildlife (deer, moose, etc.) • Activates a flashing beacon on a standard

deer sign

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Traffic Signs 101

– Intersection Collision Avoidance• The systems, installed on non‐signalized

rural intersections, reduce the number and severity of crashes

• Signs and flashing lights warn drivers approaching an intersection to stop for cross traffic

• All test locations were chosen based on crash data

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Traffic Signs 101

Dynamic Speed Display Signs– A device that detects and

display a vehicle’s current speed back to the driver

– Have been shown to have a significant speed‐reducing effect in temporary applications such as work zones or neighborhood speed watch programs

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Traffic Signs 101

Curve Warning System– The Curve Warning System provides a

programmable active warning based on the speed of the vehicle as it approaches the curve and provides a warning message to the driver to reduce speed if it is excessive

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Traffic Signs 101

Variable Speed Limit (VSL) Signs– A sign capable of displaying different

speed limits to travelers – MnDOT’s VSL that is part of the Smart

Lane System

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Traffic Signs 101

Overheight Warning System – Detects overheight vehicles moving

toward overhead obstacles – Sign is activated when an over height

vehicle is detected by the system

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Traffic Signs 101

Water on Road System – Highway sensor

that measures the presence of water on the roadway

– Linked to traveler information systems

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Traffic Signs 101

Fog Warning System – Visibility sensor that measures the

density of roadway fog – Linked to traveler information systems

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Traffic Signs 101

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Course Wrap-up