SLIDE 1

The Theory Behind Work Zone Traffic Control Work Zone Impact Analysis

2007 National Traffic Management and Work Zone Safety Conference

October 11, 2007

Paul Kelley
Work Zone Safety Coordinator
Traffic Engineering Division
Virginia Department of Transportation

SLIDE 2

What is Work Zone Impacts Assessment?

Overview of the Analysis Process

• Assess the work zone impacts and developing appropriate transportation management plans (TMPs) during project development.
• Monitor actual impacts during construction and making adjustment if necessary.
• Conduct performance assessments to track performance to improve work zone policies, procedures and practices.

SLIDE 3

Why Assess Work Zone Impacts?

• Traffic volumes and congestion are increasing
• Highways are approaching the end of their life-cycle
• More than 41,00 injuries and about 1,000 fatalities per year in work zones
• Traveler frustration with delays caused by work zones

SLIDE 4

Work Zone  Impact Considerations

• Safety of Motorist/Pedestrians/Bicyclists and Highway Workers
• Mobility and Accessibility
• Constructability by building projects as effectively and efficiently as possible

SLIDE 5

Types of Traffic Analysis Tools

• Sketch – Planning Tools
• Travel  Demand Models
• Analytical/Deterministic Tools
• Traffic Signal Optimization Tools
• Microscopic  Simulation Models
• Mesoscopic Simulation Models
• Macroscopic Simulation Models

SLIDE 6

Specific Work Zone Analysis Tools

• QuickZone
• QUEWZ-98
• Construction Analysis for Pavement Rehabilitation Strategies (CA4PRS)
• Highway Capacity Software (HCS)
• Synchro
• ITS Deployment Analysis System (IDAS)
• Dynamic Network Assignment Simulation Model for Advanced Road Telematics for Planning (DYNASMART-P)

SLIDE 7

Traffic Analysis Tools

SLIDE 8

Traffic Analysis Tools

SLIDE 9

Traffic Analysis Tools

SLIDE 10

Traffic Analysis Tools

SLIDE 11

Traffic Analysis Tools

SLIDE 12

Traffic Analysis Tools

SLIDE 13

Traffic Analysis Tools

SLIDE 14

Traffic Analysis Tools

SLIDE 15

Traffic Analysis Tools

SLIDE 16

Traffic Analysis Tools

CORSIM

SLIDE 17

Traffic Analysis Tools

CORSIM Screen

SLIDE 18

References for Traffic Analysis Tools

http://ops.fhwa.dot.gov/trafficanalysistools/toolbox.htm

SLIDE 19

References for Traffic Analysis Tools

http://www.ops.fhwa.dot.gov/wz/resources/final_rule/wzi_guide/

SLIDE 20

References for Traffic Analysis Tools

SLIDE 21

References for Traffic Analysis Tools

Artificial Neural Network (ANN)

www.trb.org/news/blurb_detail.asp?id=7363

SLIDE 22

The Theory Behind Work Zone Traffic Control/Work Zone Impact Analysis

2007 National Traffic Management and Work Zone Safety Conference

Questions

Additional Information contact:

Paul Kelley
Email: Paul.Kelley@VDOT.Virginia.gov
Telephone: 804.786.8029