عنوان

Study of all-red times for safe and efficient operations of left-turn and opposing through movements at intersections with protected-permissive left-turn (PPLT) mode

Number

TL49755

.Language of Text, Soundtrack etc

انگلیسی

Title Proper

Study of all-red times for safe and efficient operations of left-turn and opposing through movements at intersections with protected-permissive left-turn (PPLT) mode

General Material Designation

[Thesis]

First Statement of Responsibility

Muqtasid Mahbub

Subsequent Statement of Responsibility

Kang, Min Wook

Name of Publisher, Distributor, etc.

University of South Alabama

Date of Publication, Distribution, etc.

2017

Specific Material Designation and Extent of Item

74

Text of Note

Committee members: Islam, Samantha; Kang, Min Wook; Wang, Bin

Text of Note

Place of publication: United States, Ann Arbor; ISBN=978-0-355-48868-5

Dissertation or thesis details and type of degree

M.S.C.E.

Discipline of degree

College of Engineering

Body granting the degree

University of South Alabama

Text preceding or following the note

2017

Text of Note

All-red times in a signalized intersection play an important role for safety and efficiency of an intersection operation. Red times displayed to the left-turning vehicles between the protected left-turn and permissive left-turn phase, and to the opposing through vehicles before starting their movement are discussed in this research. Several existing studies show that these red times can affect the safety and performance of an intersection significantly. It is understood that increased duration of the red times can enhance the safety of an intersection by reducing the likelihood of potential collision between the traffic vehicles associated with a left-turn and opposing through movement. To identify the safety and operational effects of different red times with varying traffic volume condition, microscopic traffic simulation approach has been used in this research. VISSIM 9.0 and SSAM have been used to assess the performance and safety of different simulation models, respectively. Statistical analyses have been conducted to clearly understand the effect of different red times on intersection safety and performance. Thus, a set of red time combinations have been suggested for different traffic volume conditions to ensure enhanced safety and performance of typical four-legged intersections.

Civil engineering; Transportation

Subject Term

Applied sciences;Social sciences;Conflict;Delay;Flashing yellow arrow;Left turns;Red time interval

Al-Hajri, Wadha Nasser

Kang, Min Wook

Subdivision

College of Engineering

University of South Alabama

Call Number

2002281659; 10680705

Electronic name

p

[Thesis]

276903

a

Y