Adaptive cruise control can reduce fuel consumption by 2.8 percent on highways.
Experience from a large scale field operational test (FOT) in Europe.
Made Public Date
10/22/2014

712

Nationwide
Italy

713

Nationwide
France

600

Nationwide
Germany

714

Nationwide
Sweden
Identifier
2014-00948
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European Large-Scale Field Operational Tests on In-Vehicle Systems: Final results - Impacts on traffic efficiency and environment

Summary Information

As part of a large scale Field Operational Test (FOT) in Europe vehicles equipped with Advanced Driver Assistance Systems (ADAS) were tested in Sweden, France, Italy, and Germany. The experimental design included a three month baseline followed by a 9 to 12 month treatment phase to gather information on traffic efficiency and environmental impacts. The following ADAS applications were evaluated:

  • Adaptive Cruise Control (ACC) and Forward Collision Warning (FCW) together in one Bundle
  • Speed Regulation System (SRS): Speed Limiter (SL) and Cruise Control (CC)
  • Navigation Systems (built-in and mobile devices)

METHODOLOGY

Data used to evaluate efficiency and environmental impacts of ACC and FCW were collected from 242 drivers (64 Volvo car drivers, 88 Ford drivers, 26 Volkswagen drivers, 58 Volvo truck drivers, 6 MAN truck drivers) equipped with ADAS and onboard data loggers that recorded acceleration deceleration profiles, lane changes, and turning movements on European roadways. Each driver participated for at least six months.

Traffic efficiency effects on mileage, speed, and travel time were assessed, as well as effects on a change in congestion due to a change in number of accidents. Using statistical analyses researchers estimated impacts on the sample set of drivers and vehicles and then extrapolated impacts to a national (EU-27) level if widely deployed.

FINDINGS

ADAS significantly reduced fuel consumption on highways; however, impacts on average travel speeds, travel time, and total mileage traveled where minimal. The following data drawn from the source report highlight the overall impacts of ADAS.

Mobility Impacts at the FOT level.

Direct Measures
Facility type
Car Navigation
Built-in device
Car Navigation
Mobile device
Car ACC+FCW
Truck ACC+FCW
Cars SRS
Change in trip length-
-6.80%
-
0%
0%
0%
Change in travel time per tripAll roads
-9.40%
-7.00%
-
-
-
Highways
-
-
0.30%
0.10%
-1.40%
Rural roads
-
-
-
0.02%
-0.80%
Urban roads
-
-
0.20%
-
-2.40%
Change in average speedHighways
-
-
-0.30%
-0.10%
1.40%
Rural roads
-
-
-
-0.02%
0.80%
Urban roads
-
-
-0.20%
-
2.40%

Environmental Impacts at the FOT level.

Direct MeasuresFacility type

Car Navigation
Built-in device
Car Navigation
Mobile device
Car ACC+FCW
Truck ACC+FCW
Cars SL (Active)
Cars CC (Active)
Change in fuel consumptionAll roads
-6.8%
-
-
-
-
-
Highways
-
-2.8%
-1.9%
-1.6%
-1.1%
Rural roads
-
-
-
-
-3.8%
-13.2%
Urban roads
-
-
-
-
-5.2%
-36.1%

Mobility Impacts at the EU-27 level.

Modeled Mobility Impacts
Facility type
ACC+FCW
SRS Bundle
Change in total travel timeAll roads
0.2%
-1.2%
Highways
-1.1%
Rural roads
-0.8%
Urban roads
-2.2%

Environmental Impacts at the EU-27 level.

Modeled Environmental ImpactsFacility type
ACC+FCW
SRS SL
SRS CC
Change in fuel consumptionHighways
-1.4%
-0.3%
-0.7%

European Large-Scale Field Operational Tests on In-Vehicle Systems: Final results - Impacts on traffic efficiency and environment

European Large-Scale Field Operational Tests on In-Vehicle Systems: Final results - Impacts on traffic efficiency and environment
Publication Sort Date
11/21/2012
Author
Freek Faber (TN0), et al.
Publisher
euroFOT Consortium 2012 and Ford Forschungszentrum Aachen GmbH

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