Abstract
Delays and restrictions in intersections contribute significant to
the overall travel times in urban traffic networks and therefore
also route choices. In practice, however, it is quite unusual to
include intersection delays in traffic models, logistic models and
route guidance systems. Time consuming and tedious data
preparation together with the complexity of network updating is
the main reason for this, as most applied software packages can do
the necessary calculations. In this paper we report on the
development of a procedure that can automate the task of adding
data for intersection delay modelling to an existing network. The
method requires a GIS-based network with link attributes as input
data. The method has developed as an extension tool applicable to
existing networks and therefore supply of additional data is
normally not required.. By a set of ‘expert system rules’, the
intersections are classified in a number of groups - such as
prioritised and signalised intersections, wedges and Y-junctions -
and the required input data for turn delay models is established.
The method has been tested on large-scale networks with good
results. Most of the required data could be satisfactory
estimated, although some edits had to be made manually. This was
mainly the case for roundabouts and for intersections with a very
special geometry. In conclusion, the method greatly reduced the
burden establishing data sets for intersection delay modelling in
urban traffic networks.
Original language | English |
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Title of host publication | Using Expert System Rules to establish data on Intersec-tions and Turns in Road Networks |
Publication date | 1997 |
Publication status | Published - 1997 |
Event | Seventh International Conference on Informations Systems in Logistic and Transport - Gøteborg, Sweden Duration: 1 Jan 1997 → … |
Conference
Conference | Seventh International Conference on Informations Systems in Logistic and Transport |
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Country/Territory | Sweden |
City | Gøteborg |
Period | 01/01/1997 → … |