Scheduling Workzones in Multimodal Networks

The repair and maintenance of the network results in "workzones", where the capacity of a link, or a segment of a link, is out of commission for a predicted period of time, until the work is completed. While a single, or few widely scattered concurrent workzones, will not have a large effect upon daily commuter driving patterns, several workzones that are close together and affect large flows of traffic may result in traffic patterns that are both costly to the travelers and vehicle-based services, resulting in significant negative environmental and safety consequences. That is, the concurrent execution of several workzones within a network sometimes leads to the following adverse effects that include (1) commuting traffic delays, (2) delays in vehicle-based service systems, such as goods delivery, parcel/mail delivery, transit, etc. with possible negative effects on customer service and loss of profit/revenues, (3) safety concerns, and (4) stress on resources. Through proper scheduling, to the extent possible, in terms of both, spatial location in the network and the time period of the workzone, it may be possible to reduce the negative impacts of the workzones. Furthermore, the capability to estimate the traffic diversion due to work zones to facilitate the development of congestion mitigation strategies (e.g. signal re-timing) would be of great benefit to the traveling public. Furthermore, current considerations of scheduling workzones focus mostly on automobile traffic congestion in the network, even though agencies responsible for the workzones consider safety due to varied multimodal traffic - automobiles, trucks and buses - when designing each workzone staging area, which is normally much larger than that needed if automobile traffic operations were the only concern. This project will explicitly consider the workzone traffic delays of both, (1) daily commuters traveling from their origins to their destinations, having the objective of minimizing individual travel times and (2) fleets of vehicles (e.g., commercial trucks and buses) that have scheduled pickups/deliveries of good/ people to meet company's or agency's objectives of meeting deadlines with minimum cost. From a conceptual point of view, the project considers that two flows of "agents" are using the same physical network: commuter agents and service agents. All agents compete with each other to use the physical space of the network at any given time. Commuter-agents' objectives dominate in deriving these equilbria (in the literature the term "assignment" is often used here instead of "equilibrium"). This assumption is appropriate if most of the vehicles in the network are due to commuter travel. When one considers service agents, there are scheduled service times such as times to pick/up deliver packages, times to pickup and transport passengers, and they may have more complicated objectives such as completion of service at minimum cost and or the maximization of vehicle utilization. From a game theoretic perspective, the goal of scheduling workzones and operating the network should be to trade-off the objectives of the competing commuter agents and the service agents.

Language

  • English

Project

  • Status: Completed
  • Funding: $89795.00
  • Contract Numbers:

    DTRT-13-G-UTC55

  • Sponsor Organizations:

    Office of the Assistant Secretary for Research and Technology

    Department of Transportation
    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Performing Organizations:

    Arizona State University, Tempe

    Tempe, AZ  United States 
  • Principal Investigators:

    Mirchandani, Pitu

  • Start Date: 20140915
  • Expected Completion Date: 20150915
  • Actual Completion Date: 20160630
  • Source Data: RiP Project 36958

Subject/Index Terms

Filing Info

  • Accession Number: 01572190
  • Record Type: Research project
  • Source Agency: University of Nevada, Reno
  • Contract Numbers: DTRT-13-G-UTC55
  • Files: UTC, RiP
  • Created Date: Aug 4 2015 1:00AM