"User-oriented measurement of travel time reliability: concepts and applications
The 6th International Seminar of Committee of Infrastructure Planning and Management, JSCE in FY2013
2013年度土木計画学研究委員会 第6回国際セミナー（通算 第84回国際セミナー）
Date: September 12, 2013 (Thursday), 17:00-18:00
Venue: Midorigaoka 5th Building 1F Conference room, Tokyo Tech, 東京工業大学創造プロジェクト館1F大会議室
http://www.plan.cv.titech.ac.jp/fukudalab/contact/
（東急大井町線緑が丘駅徒歩8分）
Seminar Title: User-oriented measurement of travel time reliability: concepts and
applications
Speaker: Dr. Ioannis Kaparias
(Lecturer, City University of London)
http://www.city.ac.uk/engineering-maths/staff/dr-ioannis-kaparias
Abstract:
This study introduces a new user-oriented measure of travel time
reliability for implementation in the dynamic routing algorithm of an
intelligent car navigation system. The measure is based on the
log-normal distribution of travel time on a link and consists of two
indices corresponding to the extreme values of the distribution, such
that they reflect the shortest and longest travel times that may be
experienced on the link. Through a series of mathematical
manipulations, the indices are expressed in terms of the
characteristic values of the speed distribution on the link. An
expression relating the indices of a route and the indices of the
individual links forming it is derived. The accuracy of the measure is
then assessed through a field experiment and the results are
presented.