CAR FUEL CONSUMPTION IN URBAN TRAFFIC.
THE RESULTS OF A SURVEY IN LEEDS
USING INSTRUMENTED VEHICLES.
1. INTRODUCTION
This report deals with the development of urban fuel consumption
estimation procedures to be used in conjunction with conventional
traffic assignment models or more detailed models for traffic
management evaluation. The work reported here was undertaken as part
of a S.E.R.C. sponsored project dealing with the quantification of the
fuel consumption impacts of urban transport management measures. The
report can be conveniently divided into two parts.
Part I deals with the fuel consumed by cars for each element of
an urban trip, and draws on the results of a recent survey conducted
in Leeds with two instrumented vehicles supplied by the T.R.R.L. A
description of the vehicles*, the test-runs undertaken, and the raw
output data obtained, is given in Appendix A.
Part I1 deals with the derivation of two types of fuel consumption
sub-model, namely, simple 'average speed' relationship and a more
detailed function which takes into account the total delay and number
of stops. At this stage, the fuel consumption sub-model incorporated
into the SATURN traffic simulation and assignment model is also
described.
PART I - URBAN TRIP FUEL CONSUMPTION
2. INTRODUCTION
The average engine capacity of the U.K. passenger car fleet is in
the region of 1500 cc and in the fuel consumption analysis that follows
such an engine size will be used, whenever possible, to estimate fuel
consumption characteristics of the 'typical' vehicle.
. . . ... ... . . . ... ... ... . . . ... . . . .. . ...
* The vehicles are both Ford Cortina, 2.0 GL, 1982 models with
automatic transmission-.and 1993 c.c. engine.
CAR FUEL CONSUMPTION IN URBAN TRAFFIC.
THE RESULTS OF A SURVEY IN LEEDS
USING INSTRUMENTED VEHICLES.
1. INTRODUCTION
This report deals with the development of urban fuel consumption
estimation procedures to be used in conjunction with conventional
traffic assignment models or more detailed models for traffic
management evaluation. The work reported here was undertaken as part
of a S.E.R.C. sponsored project dealing with the quantification of the
fuel consumption impacts of urban transport management measures. The
report can be conveniently divided into two parts.
Part I deals with the fuel consumed by cars for each element of
an urban trip, and draws on the results of a recent survey conducted
in Leeds with two instrumented vehicles supplied by the T.R.R.L. A
description of the vehicles*, the test-runs undertaken, and the raw
output data obtained, is given in Appendix A.
Part I1 deals with the derivation of two types of fuel consumption
sub-model, namely, simple 'average speed' relationship and a more
detailed function which takes into account the total delay and number
of stops. At this stage, the fuel consumption sub-model incorporated
into the SATURN traffic simulation and assignment model is also
described.
PART I - URBAN TRIP FUEL CONSUMPTION
2. INTRODUCTION
The average engine capacity of the U.K. passenger car fleet is in
the region of 1500 cc and in the fuel consumption analysis that follows
such an engine size will be used, whenever possible, to estimate fuel
consumption characteristics of the 'typical' vehicle.
. . . ... ... . . . ... ... ... . . . ... . . . .. . ...
* The vehicles are both Ford Cortina, 2.0 GL, 1982 models with
automatic transmission-.and 1993 c.c. engine.
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