Print Email Facebook Twitter Urban travel time reliability at different traffic conditions Title Urban travel time reliability at different traffic conditions Author Zheng, Fangfang (Southwest Jiaotong University) Li, Jie (Hunan University) van Zuylen, H.J. (TU Delft Transport and Planning; Hunan University; Southwest Jiaotong University) Liu, Xiaobo (Southwest Jiaotong University) Yang, Hongtai (Southwest Jiaotong University) Date 2017-12-23 Abstract The decision making of travelers for route choice and departure time choice depends on the expected travel time and its reliability. A common understanding of reliability is that it is related to several statistical properties of the travel time distribution, especially to the standard deviation of the travel time and also to the skewness. For an important corridor in Changsha (P.R. China) the travel time reliability has been evaluated and a linear model is proposed for the relationship between travel time, standard deviation, skewness, and some other traffic characteristics. Statistical analysis is done for both simulation data from a delay distribution model and for real life data from automated number plate recognition (ANPR) cameras. ANPR data give unbiased travel time data, which is more representative than probe vehicles. The relationship between the mean travel time and its standard deviation is verified with an analytical model for travel time distributions as well as with the ANPR travel times. Average travel time and the standard deviation are linearly correlated for single links as well as corridors. Other influence factors are related to skewness and travel time standard deviations, such as vehicle density and degree of saturation. Skewness appears to be less well to explain from traffic characteristics than the standard deviation is. Subject automated number plate recognitionskewnesstravel time reliabilitytravel time standard deviationurban traffic To reference this document use: http://resolver.tudelft.nl/uuid:03d0fd16-cef6-4156-bea8-1634731ddbd1 DOI https://doi.org/10.1080/15472450.2017.1412829 Embargo date 2019-01-01 ISSN 1547-2450 Source Journal of Intelligent Transportation Systems: technology, planning, and operations, 22 (1028) (2), 106-120 Part of collection Institutional Repository Document type journal article Rights © 2017 Fangfang Zheng, Jie Li, H.J. van Zuylen, Xiaobo Liu, Hongtai Yang Files PDF Urban_Travel_Time_Reliabi ... final_.pdf 1.4 MB Close viewer /islandora/object/uuid:03d0fd16-cef6-4156-bea8-1634731ddbd1/datastream/OBJ/view