01590338

Component

Collecting driving speed data is a crucial element in road safety research. Recent technological developments enable a wide range of alternative traffic monitoring possibilities. In particular, the availability of cellular and GPS devices creates the opportunity to utilize probe vehicle data. To date, most studies using probe vehicle data focused on operational purposes such as congestion identification, relying primarily on average speeds. Probe vehicle data can also be useful for safety studies. The data is often collected continuously (24/7, 365 days a year). It can therefore enable detailed analyses of the continuous changes in speed over time. In addition, the spatial coverage of the data enables continuous evaluation of the halo effect of speed enforcement installation, compared with a relatively small number of measurement sites (e.g. 3-5) in traditional methods. Probe vehicle data offer one more advantage: when performing a before-after study, the before measurements have to be performed before camera installation but installation plans may change. Probe vehicle data, especially if collected continuously, regardless of research needs, enable researchers to choose the desired sites and times for analysis in retrospect, after the cameras have been installed. The purpose of this paper is to describe the results obtained from analysis of probe vehicle data on the effect of speed enforcement cameras that were installed at non-urban roads in Israel during 2011-2013. In addition to the contribution regarding the impact of enforcement cameras, the paper demonstrates the potential (as well as the challenges) of using probe vehicle data for safety studies.

This paper was sponsored by TRB committee ANB40 Standing Committee on Traffic Law Enforcement. Alternate title: Evaluating Effect of Enforcement on Speed Distributions Using Probe Vehicle Data

01584066

16-3625

English

14p

2016

Transportation Research Board 95th Annual Meeting

Digital/other

Figures; References; Tables

Digital cameras; Probe vehicles; Speed distribution; Traffic data; Traffic law enforcement; Traffic safety

Israel

Data and Information Technology; Highways; I72: Traffic and Transport Planning

Transportation Research Board Annual Meeting 2016 Paper #16-3625

TRIS, TRB, ATRI

Jan 12 2016 5:35PM