The effect of digital count-down display on signalized junction performance

Ibrahim, M.R. and Karim, M.R. and Kidwai, F.A. (2008) The effect of digital count-down display on signalized junction performance. American Journal of Applied Sciences, 5 (5). pp. 479-482. ISSN 15469239,

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Intersections are bottleneck in the highway networks and critical determinant of system's capacity and safety. Recently, several countdown timers had been installed at intersections in Kuala Lumpur and some other cities in Malaysia. The function of these timers is to aid drivers to judge the amount of time left for them to get the green signal for moving (starting) their vehicles as well as the amount of green time available for them to proceed across the intersection or to stop safely before the signal turns red. This advance information is supposed to help drivers in reducing their initial delay, especially for the first few vehicles and improving safety level. In the present research six intersections, three with count down timers and three with no-count down timer are analyzed to study the effect of count down timer on driver behavior, intersection approach headway and safety levels. The study suggests that countdown timer has got little effect on initial delay but the effect on headway is significant. The violation of traffic light by the drivers for countdown and normal signal is also compared.

Item Type: Article
Additional Information: Cited By (since 1996):10 Export Date: 16 December 2013 Source: Scopus Language of Original Document: English Correspondence Address: Ibrahim, M.R.; Department of Civil Engineering, Engineering Faculty, University of Malaya, 50603 Kuala Lumpur, Malaysia References: Highway Capacity Manual 2000. Transportation Research Board, Washington D.CIbrahim, W. H. W, Ahmad Farhan Mohd. Sadullah and Leong Lee Vien, 2002 Determination of Ideal Saturation Flow at Signalised Intersections under Malaysian Road Conditions, MUTRF, University of Malaya, Kuala Lumpur, pp: 304-311Road Research Laboratory 1963. A Method for Measuring Saturation Flow at Traffic Signals, Department of Scientific and Industrial Research, Road Note 34/196, HMSO, London, U.KLeong Lee Vien, Wan Hashim Wan Ibrahim and Ahmad Farhan Mohd. Sadullah 2003, Determination of passenger car equivalents using the headway ratio method at signalised intersections in Malaysia, International Journal of Engineering Science & Technology, 3, Number 2, pp; 109-214Kidwai, F.A. and Tan, M.W. 2004, Capacity Analysis of Signalised Urban Intersection, AWAM-2004, Universiti Sains Malaysia, Pinang, pp: 9H05-1-9H05-7Karim, M.R, Kidwai, F.A. and Ibrahim, M.R. 2004, A Preliminary Study on the Performance of Digital Countdown Traffic Signal, Paper presented at 3rd MKJR meeting at Muar, Johor, Malaysia,pp: 10-11 September 2004UR -
Uncontrolled Keywords: Capacity, Countdown signal, Delay, Intersection, Urban
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Engineering
Depositing User: Mr Jenal S
Date Deposited: 04 Apr 2014 01:21
Last Modified: 04 Apr 2014 01:21

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