Evaluation of the Rain Effects on Gap Acceptance Behavior at Roundabouts by a Logit Model
Joint Authors
Lee, Dongmin
Hwang, Sooncheon
Ka, Eunhan
Lee, Chungwon
Source
Journal of Advanced Transportation
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-07-11
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
A roundabout is generally known as an efficient, safe, and environmentally friendly intersection.
Since 2010, the Korea government has taken the lead in constructing roundabouts as part of a special project.
During that time, many ideas have been put forward to improve the safety, operation, and design of such roundabouts.
In terms of improvements, it is particularly important to understand roundabout gap acceptance behavior.
As such, we investigated gap acceptance behaviors at four roundabouts based on field observation during both good weather and rainy conditions.
Based on the observed data, roundabout critical gaps were estimated, and a logit model for gap acceptance using various roundabout variables was developed to investigate gap acceptance maneuvering at roundabouts.
A total of 2,421 data events for gap acceptance were collected from the field observation.
Out of these events, 64.6% of drivers (1,564 drivers) accepted the given gaps and 35.4% of drivers (857 drivers) rejected them.
The values for critical gaps were estimated using several different estimation methods and ranged from 3.3 to 4.7 seconds.
The model was developed using four variables including gap size, type of circulating vehicle, traffic volume at the circulating lane, and weather conditions.
The developed model shows that a longer gap results in a 3.669 times higher probability of entering roundabouts when the gap is sufficiently great for acceptance than when the gap is smaller.
The effects of other variables, such as circulating vehicle types, circulating traffic volume, and weather conditions, are relatively lower than that of a gap size.
Rain conditions influenced gap acceptance maneuvering around a roundabout.
Drivers need about a 10 percent longer gap to accept entry into roundabouts during rainy conditions, and gap acceptance probabilities are 10 to 20 percent lower for the same given gap time during rainy conditions compared to good weather conditions.
American Psychological Association (APA)
Lee, Dongmin& Hwang, Sooncheon& Ka, Eunhan& Lee, Chungwon. 2018. Evaluation of the Rain Effects on Gap Acceptance Behavior at Roundabouts by a Logit Model. Journal of Advanced Transportation،Vol. 2018, no. 2018, pp.1-11.
https://search.emarefa.net/detail/BIM-1181089
Modern Language Association (MLA)
Lee, Dongmin…[et al.]. Evaluation of the Rain Effects on Gap Acceptance Behavior at Roundabouts by a Logit Model. Journal of Advanced Transportation No. 2018 (2018), pp.1-11.
https://search.emarefa.net/detail/BIM-1181089
American Medical Association (AMA)
Lee, Dongmin& Hwang, Sooncheon& Ka, Eunhan& Lee, Chungwon. Evaluation of the Rain Effects on Gap Acceptance Behavior at Roundabouts by a Logit Model. Journal of Advanced Transportation. 2018. Vol. 2018, no. 2018, pp.1-11.
https://search.emarefa.net/detail/BIM-1181089
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1181089