Campus Units

Civil, Construction and Environmental Engineering, Institute for Transportation

Document Type

Conference Proceeding

Conference

2015 IEEE 18th International Conference on Intelligent Transportation Systems

Publication Version

Accepted Manuscript

Link to Published Version

https://doi.org/10.1109/ITSC.2015.149

Publication Date

2015

Journal or Book Title

2015 IEEE 18th International Conference on Intelligent Transportation Systems

First Page

888

Last Page

893

Research Focus Area

Transportation Engineering

DOI

10.1109/ITSC.2015.149

Conference Title

2015 IEEE 18th International Conference on Intelligent Transportation Systems

Conference Date

September 15-18, 2015

City

Las Palmas, Spain

Abstract

Microscopic traffic modelling is a popular tool in the transportation field, but using such models comes with significant data needs in order to properly calibrate them. Two important driver behavior parameters in these models are the preferred time headways and standstill distances. In this paper, an economical method for collecting headways and standstill distances is presented and applied to urban freeways in Iowa, USA. The following time headways and standstill distances were categorized into four combinations of car and truck pairs. It was found that headway values largely depend on the following vehicle type-when a car was following the average headway was around 2 seconds, compared to around 3 seconds when a truck was following. Additionally, the car-car combination leaves much less space when stopped than when a pair involves trucks. In particular, the average standstill distance of a car following a car was found to be around 9 feet, while the average standstill distances are around 12 feet when a truck is involved. However, both headways and standstill distances follow fairly disperse distributions, due to the heterogeneity in driver behavior. Thus, microsimulation software should be improved to allow these parameters to follow distributions.

Comments

This proceeding was published as Houchin, Andrew, Jing Dong, Neal Hawkins, and Skylar Knickerbocker. "Measurement and analysis of heterogenous vehicle following behavior on urban freeways: Time headways and standstill distances." In Intelligent Transportation Systems (ITSC), 2015 IEEE 18th International Conference on (2015): 888-893. DOI: 10.1109/ITSC.2015.149. Posted with permission.

Rights

© 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

Copyright Owner

IEEE

Language

en

File Format

application/pdf

Published Version

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