A new delay parameter for variable traffic flows at signalized intersections
Yükleniyor...
Tarih
2007
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Estimation of delay at signalized intersections is a complex process and depends on a number of parameters, among which the degree of saturation (x = v/c) is the most important. This paper presents a new methodology for estimating delay parameter ?, and proposes an analytical delay model for signalized intersections that considers the variation in traffic flow. Unlike the existing delay models in the literature, the delay parameter k is not a fixed value and is expressed as a function of the degree of saturation. The proposed model is applicable to the entire range of expected operation including highly oversaturated traffic conditions. A comparative study of the proposed model against the existing models was performed to verify the improvements by the proposed model. Later, the TRAF-NETSIM (Traffic Network Simulation) microscopic simulation model was used in the calibration and verification of the new delay model for oversaturated conditions. The simulation was conducted in 3 consecutive time periods to reflect fluctuation in traffic demand. The relationship between the simulated and proposed delay model results were analyzed for 48 different scenarios. ©TÜ? ITAK.
Açıklama
Anahtar Kelimeler
Degree of saturation, Delay estimation, Delay parameter, Signalized intersections, Simulation, Variable demand
Kaynak
Turkish Journal of Engineering and Environmental Sciences
WoS Q Değeri
Scopus Q Değeri
N/A
Cilt
31
Sayı
1
Künye
Akgüngör, A. P., Bullen, A. G. R. (2007). A new delay parameter for variable traffic flows at signalized intersections. Turkish Journal of Engineering and Environmental Sciences, 31(1), 61 - 70.
