Determination of lag acceptance and effects for left turning movements at intersections

Foad Shokri, Amiruddin Ismail, Mohammad Hesam Hafezi, Mohammad Ganji, Riza Atiq Abdullah O.K. Rahmat

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Interaction between traffic streams is an important aspect of highway traffic flow. It occurs when a driver changes traffic lane, merges with or crosses a traffic stream. Probably it takes place most frequently when priority control is used to resolve vehicular conflicts at highway intersections. Lag acceptance behavior can be studied by observing driver reactions at a priority intersection where the flow on the minor road exceeds 100 veh/h and where the major road traffic stream or streams exceed 400 veh/h. The determination of lag acceptance for turning movements at priority junctions and comparisons of lag acceptance during day time and hours of darkness is very important in the performance evaluation of priority junctions and in maintaining the safety of vehicular traffic flow. Data collection at site would involve four selected junctions. The determination of the lag acceptance will serve as a minimum local value for drivers to merge into main roads from priority junctions when turning left. The limitations of the study are first, the data base for the research would only involve cars and second, the movement to be taken in consideration is the left turning movement and within Bangi areas only. It is found that an overall of 3.8 seconds of lag acceptance has been obtained for daytime and 4.7 seconds for hours of darkness.

Original languageEnglish
Pages (from-to)115-121
Number of pages7
JournalAustralian Journal of Basic and Applied Sciences
Volume6
Issue number10
Publication statusPublished - Oct 2012

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Keywords

  • Delay time
  • Intersection
  • Lag acceptance
  • Turning movement

ASJC Scopus subject areas

  • General

Cite this

Determination of lag acceptance and effects for left turning movements at intersections. / Shokri, Foad; Ismail, Amiruddin; Hafezi, Mohammad Hesam; Ganji, Mohammad; O.K. Rahmat, Riza Atiq Abdullah.

In: Australian Journal of Basic and Applied Sciences, Vol. 6, No. 10, 10.2012, p. 115-121.

Research output: Contribution to journalArticle

Shokri, Foad ; Ismail, Amiruddin ; Hafezi, Mohammad Hesam ; Ganji, Mohammad ; O.K. Rahmat, Riza Atiq Abdullah. / Determination of lag acceptance and effects for left turning movements at intersections. In: Australian Journal of Basic and Applied Sciences. 2012 ; Vol. 6, No. 10. pp. 115-121.
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