[1]HUANG Shunlun,DU Chun,SONG Baoquan,et al.Urban link travel time estimation using taxi data[J].CAAI Transactions on Intelligent Systems,2017,12(6):790-798.[doi:10.11992/tis.201706071]
Copy
CAAI Transactions on Intelligent Systems[ISSN 1673-4785/CN 23-1538/TP] Volume:
12
Number of periods:
2017 6
Page number:
790-798
Column:
学术论文—机器学习
Public date:
2017-12-25
- Title:
-
Urban link travel time estimation using taxi data
- Author(s):
-
HUANG Shunlun; DU Chun; SONG Baoquan; LI Jun; CHEN Hao
-
School of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China
-
- Keywords:
-
travel time estimation; GPS-enabled taxicab; urban road networks; two-lane model
- CLC:
-
TP311
- DOI:
-
10.11992/tis.201706071
- Abstract:
-
The accurate estimation of urban link travel time plays a significant role in urban traffic monitoring and supervision. Using taxicab GPS trip data, which contains origin and destination locations, travel time, and distances, this paper establishes a model to estimate average short-term urban link travel times. Firstly, the urban road network is divided into many segments based on crossings, and the running route of the driver was analyzed using the k-shortest path search algorithm. Then, for each road segment, a polynomial incidence relation model of the travel time in double lanes is proposed; this increases precision and avoids the overfitting of the travel time of the road network caused by insufficient training data. Finally, by minimizing the mean square error between the expected path travel time and the observed path travel time as the optimization objective, the travel time of the road network is fitted. The results of experiments conducted on New York taxi datasets show that, relative to the traditional single-lane estimation method, the proposed model and method more efficiently estimate the travel time of the road segments in urban road networks.