Concept

Road hazards identified by drivers or on-board vehicle sensors would be reported to the Connected Vehicle network so that other drivers approaching those hazards could be notified of elevated risk in advance.  

Users

Users of this application include anyone using the public roadways and having access to the Connected Vehicle system. 

Benefits

The primary benefit of this concept is increased safety although improved mobility and decreased environmental impact would also result from its implementation.  

Use Scenario(s)

This application would be useful any time a driver would benefit from forewarning of a potential hazard on the road ahead.  Potential hazards that might be addressed by this application include, but are not limited to the following: A slow moving vehicle such as a tractor or horse-drawn buggy Crashed or stopped vehicles Roadway damage such as potholes A pedestrian or bicyclist on a narrow roadway The presence of animals on or near the roadway Fallen trees or other objects in the roadway Slippery pavement due to ice or mud on the roadway

Operation

Recognized hazards could be identified/report to the Connected Vehicle system using several methods.  Drivers could make reports based on their observations while driving via a Connected Vehicle interface or other portable electronic device (Figure 1).  Vehicle on-board sensors such as the ranging devices used for adaptive cruise control and collision avoidance systems might be used to identify hazards.  Vehicle stability control and anti-lock braking systems could autonomously report wheel slippage, an indication of hazardous road conditions.  Roadway maintenance authorities identifying damaged pavement or other road hazards could report the condition to the Connected Vehicle system via phone or other interfaces for temporary inclusion in the database.  Once hazards are reported, an algorithm running within the Connected Vehicle system would track reports and determine their validity.  Once a hazard was verified, the location of the hazard and nearby vehicles would be used to issue appropriate notifications to those drivers approaching the hazard.   

Communication Requirements

The types of communications required by this application would vary with location.  However, because this concept would be particularly useful in rural areas it’s likely that communications other than DSRC would be used and that a cellular interface would be most useful.

Implementation

Implementation of this concept would require development of the following elements: An in-vehicle interface for driver reporting and notification (manual, voice recognition, etc.) Connected Vehicle road hazard database elements In-vehicle algorithms and communication protocols for sensor reporting (vehicle diagnostic bus to Connected Vehicle hardware) An interface for transportation authority input (in-vehicle, cellular, voice) A hazard verification and reporting algorithm within the Connected Vehicle system   Attachment(s): ·         Figure 1 File -  “Road Hazard.jpg”  Note: This concept originally proposed Dec 3, 2010 at VDOT ERAC meeting.

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