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VRRD

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Or dealt with only one type of VRRD, such as falling cargo or wheel separations ... Unsecured loads, unsafe wheels, littering. Vehicle inspections ... – PowerPoint PPT presentation

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Title: VRRD


1
Vehicle-Related Road Debris
2
Published June 2004 Prepared by Intus Road
Safety Engineering Inc. Report and VRRD photos
available online at www.aaafoundation.org
3
What is VRRD?
  • Vehicle-related road debris (VRRD) is
  • materialvehicle parts or cargo that has
  • been unintentionally discharged from a
  • vehicle onto the roadway.

4
Potential VRRD
5
Potential VRRD
  • Appliances
  • Barrels
  • Box, i.e., Cardboard
  • Furniture, i.e., Chair/Couch
  • Garbage Trash
  • Gravel Soil
  • Lumber Construction Materials
  • Mufflers Exhaust Parts
  • Tire Treads
  • Tree Limbs
  • Vehicle Parts

6
Tires and Wheels are a Main Source
7
Background
  • A few studies have been conducted on the safety
    impact of VRRD
  • Past studies have either
  • Addressed the safety impact of nonfixed objects
    on the road (of which VRRD is one type)
  • Or dealt with only one type of VRRD, such as
    falling cargo or wheel separations
  • Industry-sponsored research

8
Scope of Study
  • Magnitude of the VRRD safety problem (i.e.,
    frequency and severity of VRRD crashes)
  • Identified potential countermeasures to prevent
    VRRD, the incidence of crashes, and/or to reduce
    VRRD crash severity.
  • Evaluated roads in U.S. Canada

9
Methods
  • Literature review
  • Identification and analysis of existing crash
    data
  • Surveys of current state and provincial practices
    for preventing and removing VRRD

10
VRRD Crash Statistics Literature Review
  • 3 studies determined tire debris was the cause of
    less than 1 of all crashes
  • 2 examined wheel separation crashes and reported
    they constitute 0.3 and 1, respectively, of all
    crashes
  • Study on highway bridges found debris-related
    crashes constituted 10 of all crashes

11
VRRD Crash Statistics Our Study
  • Overall Findings
  • Less than 1 of total crashes
  • over 25,000 crashes per year
  • Approximately 80-90 fatalities per year
  • Overall, the severity of VRRD crashes is less
    than other crashes, but individual incidents can
    be catastrophic.

12
Preventing and Removing VRRD
  • 2 different surveys sent to transportation
    agencies in the US and Canada
  • Prevention
  • What regulations, education, and enforcement
    programs do states and provinces have in place
    for VRRD prevention?
  • Maintenance
  • What programs do road authorities have in place
    to mitigate the impact of VRRD?

13
Prevention Survey
  • 68 of jurisdictions have education program
  • Commercial vehicle inspection/cargo securement
  • Flyers
  • PSAs
  • Range of enforcement programs
  • Unsecured loads, unsafe wheels, littering
  • Vehicle inspections
  • Frequency of enforcement varies considerably

14
Maintenance Survey
  • Responsibility for removal generally defined
    time standards vary
  • Over 55 of jurisdictions have informative and or
    educational programs
  • Over 70 of the organizations reported removing
    VRRD on a daily basis
  • In general, road maintenance personnel remove
    debris manually as soon as practical after they
    have been notified of the debris
  • Common maintenance program
  • Roadside assistance 59
  • Video surveillance 49
  • Traffic sensors 32
  • Tow trucks 32

15
Highway Debris Removal
16
Overall Conclusions
  • Incidence and severity of VRRD crashes are
    relatively low, however VRRD crashes do occur and
    can result in serious injury or death
  • Transportation agencies should consider low-cost
    approaches to reducing the problem

17
Recommendations
  • Targeted education and enforcement programs
  • Enacting stricter laws on load securement
  • Training enforcement officials in vehicle safety
    and load securement
  • Targeting specific groups for enforcement (e.g.,
    waste haulers, landscapers)
  • Educating fleet maintenance personnel on
    preventing wheel separations
  • Training commercial vehicle drivers to
    periodically inspect their vehicles and cargo
  • Educating motorists on defensive driving,
    especially around trucks in the event of wheel
    and tire separations
  • Educating motorists on load securement and
    reporting unsafe vehicles, unsecured loads, and
    road debris

18
The AAA Foundation for Traffic Safety is a
501(c)(3) public charity located in Washington,
DC that is dedicated to research and education
about the causes of traffic crashes. It is
supported by donations from AAA/CAA Clubs,
AAA/CAA members, and other organizations
associated with AAA/CAA.
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