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Incident Management in Central Arkansas: Current Settings and Proposed Extensions. Weihua Xiao Yupo Chan University of Arkansas at Little Rock. Traffic Incident Management.

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incident management in central arkansas current settings and proposed extensions

Incident Management in Central Arkansas:Current Settings and Proposed Extensions

Weihua Xiao

Yupo Chan

University of Arkansas at Little Rock

traffic incident management
Traffic Incident Management
  • The cost of total delay in rural and urban areas is estimated by the USDOT to be around $1 trillion per year…Well over half of nonrecurring traffic delay in urban areas and almost 100% in rural areas are attributed to incidents… USDOT estimates that the crashes that result from other incidents make up 14-18% of all crashes (National Conf. On TIM, 2002).
  • Effective incident management can decrease secondary crashes, improve roadway safety and decrease traffic delays.
incident management activities
Incident Management Activities
  • Motorist Assistance Patrol (MAP)
    • 3 vehicles operating on I-30, I-40, I-630, I-430, and I-440 in the urbanized area.
    • Proposed to provide some coverage of both US 67/167 and I-530, from I-30 to Dixon Road
  • Towing and Wrecker Service
    • A rotation list of qualified towing and wrecker services.
    • Current procedures do not specify a minimum response time.
  • Emergency Medical Services (EMS)
    • 911 calls
    • Communications upgrades are needed.
  • Traffic Management at Work Zones (Meadors 2002)
    • Queue detectors
    • Variable message signs (VMS) and highway advisory radio (HAR)
  • Traveler Information System
    • 511 calls
goals of our study
Goals of our Study

Assess the negative impact of incidents

using simulation technology.

Identify those factors that increase chances of incidents

via data-mining technology.

Evaluate the overall performance of the

incident management program.

Improve incident detection efficiency, accuracy,

and response strategy in general

Enhance incident site management strategies to

reduce the negative impact of incidents.

implementations incident data analysis and modeling
ImplementationsIncident Data Analysis and Modeling
  • Incident Occurrence Model
    • Poisson or Negative binominal?
    • What factors affect the occurrence of incidents: speed limit, lanes, weather, intersections, etc.
  • Incident Duration Model
    • Normal distribution? Lognormal distribution?
    • Parameters?
  • Blocked-lane Model
    • The relationship between number of blocked lanes and incident characteristics
implementations simulation based decision support system
ImplementationsSimulation Based Decision Support System
  • Evaluate current incident management program.
  • Predict the effects of changes or upgrades.
implementations enhancement of incident detection

CELLPHONES

REMOTE SENSORS

INDUCTIVELOOP DETECTORS

ImplementationsEnhancement of Incident Detection

(Mirchandani, 2003)

  • OTHER DETECTORS
  • VIDEO DETECTORS
  • SONAR DETECTORS
  • RADAR DETECTORS

6

1

2

5

3

4

implementations enhancement of incident detection1
ImplementationsEnhancement of Incident detection
  • Choose the right location to install the sensors.
  • Efficient incident detection algorithm.
  • Locate the cell phone caller quickly and precisely.
slide15
GPS, Remote sensing & GIS Lab

Telecommunications and Transportation Lab

Virtual Reality Center

slide16
Incident Data of Arkansas collected fromBureau of Transportation Statistics (BTS)Fatal traffic crashes
  • Interested information
    • City, County, Weather, Day of Week, Day of Month, Month, Year, Fatalities, Injuries, Lanes, Light Condition, Mile point, Speeding, Speed, Speed limit, Surface Condition, Pavement Type
we need more detailed data
We need more detailed data…
  • Locations of incidents: route, mile post, speed limit, number of lanes, number of blocked lanes, horizontal grade, vertical grade, traffic volume, etc.
  • Incident response: response time, incident duration, etc.
summary
Summary
  • negative consequences are by no means negligible in small and medium communities
  • an incident management plan that is articulated with an ITS architecture.
  • analysis and modeling of historical incident data
  • the right intersections to install incident-detection devices
  • incident-generation module in the incident-management simulation software
  • ITS metaLAB with close cooperation with other regional stakeholders
  • a case study for other communities of similar population size and structure
thank you
Thank you!

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