Title :
Use of disparate technologies for collecting journey time data for HATRIS
Author :
Harwood, N. ; Frith, B.A.
Author_Institution :
TRL, Wokingham, UK
Abstract :
The Highways Agency Traffic Information System (HATRIS) contains the average journey time for every junction-to-junction link on the HA network, for journeys starting every 15 minutes since September 2002. The data for these journey times comes from a variety of sources including inductive loops, automatic number-plate recognition (ANPR), and GPS (Global Positioning System) devices. This paper describes how the data from these disparate sources is collated and combined to produce consistent, reliable average journey times. The characteristics of each source are examined, and the challenges involved in mapping them on to a single network description are discussed.
Keywords :
Global Positioning System; automated highways; database management systems; object recognition; sensor fusion; traffic information systems; ANPR; GPS devices; HA network; HATRIS; automatic number-plate recognition; average journey time; data fusion; disparate sources; disparate technology; global positioning system devices; highways agency traffic information system; inductive loops; journey time data; junction-to-junction link; single network description; ANPR; Fusion; GPS; HATRIS; Traffic;
Conference_Titel :
Road Transport Information and Control - RTIC 2008 and ITS United Kingdom Members' Conference, IET
Conference_Location :
Manchester
Print_ISBN :
978-0-86341-920-1
