University of Illinois Urbana-Champaign

Improving the Effectiveness of Smart Work Zone Technologies

Li, Yanning; Martinez Mori, Juan Carlos; Work, Daniel B.

Content Files
FHWA-ICT-16-021.pdf

Permalink

https://hdl.handle.net/2142/94999

Description

Title
Improving the Effectiveness of Smart Work Zone Technologies
Author(s)
  • Li, Yanning
  • Martinez Mori, Juan Carlos
  • Work, Daniel B.
Issue Date
2016-11
Keyword(s)
  • smart work zone systems
  • traffic estimation
  • microsimulation
Date of Ingest
2017-01-13T17:20:32Z
Geographic Coverage
Illinois
Abstract
This project evaluates the effectiveness of sensor network systems for work zone traffic estimation. The comparative analysis is performed on a work zone modeled in microsimulation and calibrated with field data from two Illinois work zones. Realistic error models are used to generate noisy measurements corresponding to Doppler radar sensors, remote traffic microwave sensors (RTMS), and low-energy radar (LER). The velocity, queue length, and travel time are estimated with three algorithms based on (1) interpolation, (2) spatio-temporal smoothing, and a (3) flow model–based Kalman filter. More than 700 sensor and algorithm configurations are evaluated, and the accuracy of the resulting traffic estimates are compared with the true traffic state from the microsimulation. The nonlinear Kalman filter provides up to 30% error reduction over other velocity estimators when the RTMS spacing exceeds 2 miles and generally offers the best performance for queue and travel time estimation.
Publisher
Illinois Center for Transportation/Illinois Department of Transportation
Series/Report Name or Number
Illinois Center for Transportation Series No. 16‐023
ISSN
0197-9191
Type of Resource
text
Genre of Resource
Technical Report
Language
en
Permalink
http://hdl.handle.net/2142/94999
Sponsor(s)/Grant Number(s)
Illinois Department of Transportation, R27-155
Copyright and License Information
No restrictions. This document is available through the National Technical Information Service, Springfield, VA 22161.

Owning Collections

Research and Publications - Illinois Center for Transportation PRIMARY