Evaluation of the Waiting-Time effect on Critical Gaps at Roundabouts by a Logit Model

The paper presents a new behavioral approach to estimate the impact on critical gaps of waiting time prior to entry into a roundabout. A disaggregate logit model is developed to study the effect of waiting time at an approach to a roundabout on the likelihood of accepting different gaps and, therefore, on the critical gap. The estimated model showed that the waiting time has a significant effect on the critical gap, particularly on gaps in the range of 2 to 5 seconds. The importance of this model is that it shows quantitatively the reduction in the critical gap with the increase in waiting time. Therefore, roundabout capacity for this range of critical gaps is higher than that currently proposed by the Highway Capacity Manual (HCM 2000).

[1]  Abishai Polus,et al.  Analysis and Evaluation of the Capacity of Roundabouts , 1997 .

[2]  Mai-Britt Herslund,et al.  Looked-but-failed-to-see-errors in traffic. , 2003, Accident; analysis and prevention.

[3]  R. Ashworth,et al.  The capacity of priority-type intersections with a non-uniform distribution of critical acceptance gaps , 1969 .

[4]  Birgit Stuwe.  Capacity and Safety of Roundabouts — German Results , 1991 .

[5]  Abishai Polus,et al.  NON-STATIONARY GAP ACCEPTANCE ASSUMING DRIVERS' LEARNING AND IMPATIENCE. , 1996 .

[6]  Fred L. Mannering,et al.  Predicting Vehicle Occupancies from Accident Data: An Accident Severity Approach , 1998 .

[7]  R M Kimber,et al.  THE TRAFFIC CAPACITY OF ROUNDABOUTS , 1980 .

[8]  Mark S. Horswill,et al.  The influence of desire for control on drivers risk-taking behaviour , 2001 .

[9]  Abishai Polus,et al.  ENTRY CAPACITY AT ROUNDABOUTS AND IMPACT OF WAITING TIMES. , 1999 .

[10]  Michel J. Simon.  Roundabouts in Switzerland , 1991 .

[11]  C. Daganzo.  Estimation of gap acceptance parameters within and across the population from direct roadside observation , 1981 .

[12]  Jong Jae Lee,et al.  ANALYSIS OF ROADSIDE ACCIDENT FREQUENCY AND SEVERITY AND ROADSIDE SAFETY MANAGEMENT , 1999 .

[13]  Mark D. Uncles,et al.  Discrete Choice Analysis: Theory and Application to Travel Demand , 1987 .

[14]  Jennifer Alexander,et al.  Factors influencing the probability of an incident at a junction: results from an interactive driving simulator. , 2002, Accident; analysis and prevention.

[15]  John Douglas Hunt,et al.  GAP ACCEPTANCE BEHAVIOUR: AGGREGATE AND LOGIT PERSPECTIVES.. , 1997 .

[16]  Hani S. Mahmassani,et al.  BEHAVIORAL MODELS AND CHARACTERISTICS OF BICYCLE-AUTOMOBILE MIXED-TRAFFIC: PLANNING AND ENGINEERING IMPLICATIONS , 1998 .

[17]  Donald Richard Drew,et al.  Traffic flow theory and control , 1968 .

[18]  Prahlad D. Pant,et al.  Neural Network for Gap Acceptance at Stop-Controlled Intersections , 1994 .

[19]  H. Mahmassani,et al.  Using gap sequences to estimate gap acceptance functions , 1981 .

[20]  Lily Elefteriadou,et al.  A methodology for estimating capacity at ramp weaves based on gap acceptance and linear optimization , 2003 .

[21]  Peter J Cooper,et al.  Turning gap acceptance decision-making: the impact of driver distraction. , 2002, Journal of safety research.