NSW Intelligent Speed Adaptation Trial

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NSW Intelligent Speed Adaptation Trial
General information
Type: Field operational test
Tested system/service: Intelligent Speed Adaptation
Countries: Australia 106 test users
 ? partners 114 vehicles
Active from 2008/06/01 to 2010/11/30
Contact
Full Results and Summary Fact Sheets
John Wall
John_wall@rta.nsw.gov.au
NSW Centre for Road Safety
Australia
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The New South Wales Centre for Road Safety is currently conducting the largest trial of Advisory Intelligent Speed Adaptation technology in Australia. More than 100 vehicles are participating in the trial which is being conducted in the Illawarra Region of the state. This trial is unique because each vehicle is connected to a centralised computer system which automatically updates changes to speed zones. The NSW ISA trial aims to:

  • Research the potential road safety benefits of advisory ISA systems in NSW.
  • Measure the economic effects in terms of fuel consumption and effects on travel time of installing ISA systems in NSW vehicles.
  • Assess the acceptability of ISA systems to drivers and managers using and administering private fleets and to drivers of private vehicles.

More than 7.6 million speed compliance records were collected during the trial at ten second intervals from trial vehicles.

When the ISA devices were installed, 89 per cent of vehicles (94 out of 106) reduced the amount of time they spent speeding, compared to before the ISA device was installed. With the ISA device active, the probability of speeding was reduced by a third.

In all speed limits including 40km/h school zones, 50km/h urban areas and 100km/h freeways, the mean and median speeds of vehicles decreased.

Road safety modelling from the trial suggests that if every vehicle in the Illawarra was equipped with advisory ISA we would see an 8.4% reduction in fatalities and a 5.9% drop in road injuries. If this model was applied to the whole NSW road toll we would expect to see 35 lives saved and 1,455 less people injured if all vehicles in NSW were equipped with advisory ISA.

Key milestones of the project

  • Commence planning for Trial – June 2008
  • Begin installing ISA devices – October 2009
  • Beginning of ISA trial Period – 01 December 2008
  • End of ISA trial period – 28 March 2010
  • End of data logging – 30 April 2010
  • Results released - 25 October 2010

Details of Field Operational Test

Start date and duration of FOT execution

01 December 2009 – 30 April 2010

Geographical Coverage

The NSW ISA is being conducted on 2,500 km of state and local roads within the Illawarra Region of New South Wales. The Illawarra Region is located approximately 40Km south of Sydney, Australia.

Link with other related Field Operational Tests

No

Objectives

  • To research the potential road safety benefits of advisory ISA systems in NSW.
  • To measure the economic benefits in terms of fuel consumption and effects on travel times.
  • To assess the acceptability of ISA systems to drivers and managers using and administering private fleets.

Results

The trial demonstrated that Advisory ISA technology had a positive impact on reducing the amount of time drivers spent speeding, as well as reducing the mean and median speeds in all speed zones.

  • When the ISA device was active in vehicles 89% of drivers reduced the amount of time they spent exceeding the speed limit.
  • When the ISA device was active in vehicles, the probability of speeding was reduced by almost one third.
  • After the ISA device was deactivated, 86% of drivers spent more time driving above the speed limit than when the device was active.
  • The ISA technology was equally effective at reducing speeding amongst all driver demographics, including ‘repeat speeders’ and ‘deliberate speeders’, with the exception of younger drivers aged 25 years or less.
  • When the ISA devices were active in vehicles, 77% of the drivers aged 25 years or less reduced their time spent speeding, compared to 93% of drivers above 25 years of age.
  • Drivers aged 25 years or less were more likely to admit to turning their ISA device off, which reduced its impact on their speeding behaviour.
  • The Advisory ISA technology was generally well received by drivers participating in the trial. Many drivers reported that the ISA device was particularly useful in preventing “accidental” speeding and ensuring that they were always aware of the speed limit.

Road safety modelling from the trial based suggests that if every vehicle in the Illawarra was equipped with advisory ISA we would see an 8.4% reduction in fatalities and a 5.9% drop in road injuries. If this model was applied to the whole NSW road toll we would expect to see 35 lives saved and 1,455 less people injured if all vehicles in NSW were equipped with advisory ISA.

Lessons learned

Main events

Financing

Summary, type of funding and budget

$1 million AU of public funding

Cooperation partners and contact persons

  • Public Authorities:
  • Industry
    • Vehicle Manufacturer:
    • Supplier: Smart Car Technologies, Ultimo Australia
  • Users:
  • Universities:
  • Research Institutes:
  • Others (specify):

Main contact person

   John P Wall
   Principal Analyst
   Road Safety Technology Section
   NSW Centre for Road Safety
   Roads and Traffic Authority of NSW
   Email:John Wall

Applications and equipment

Applications tested

Intelligent Speed Adaptation - Advisory

Vehicle

114 Private Vehicles (Light vehicles)

Equipment carried by test users

Infrastructure

Test equipment

114 Speed data loggers – MapData Sciences, Sydney

Methodology

Pre-simulation / Piloting of the FOT

Supportive and Advisory ISA systems installed into Road Safety Research Vehicle for testing. – June 2008 to October 2009.

Method for the baseline

1 month of speed data collection before the ISA system was installed in vehicles.

Techniques for measurement and data collection

Speed and location of vehicle collected every 10 seconds via GPS data recorder. Data from recorder sent wirelessly over GPRS cell phone network to centralised spatial server for storage.

Collected data

Objective:

  • Location of 4,500 roadside speed zone and curve advisory speed signs.
  • Speed and location every 10 seconds.
  • Currently more than 5.4 million speed records have been collected during the project (February 2010).

Subjective:

  • Pre and post on-line surveys
  • Focus Groups
  • Individual interviews

Availability of data

On merit, contact:

   Mr John Wall,
   Principal Analyst Road Safety Technology
   NSW Centre for Road Safety
   Roads and Traffic Authority
   John Wall

Recruitment goals and methods

106, three months with ISA.

61% private drivers and 39% fleet drivers

56% male and 44% female

Broad distribution of ages with an under 25 years booster

58% have held a car driver license for more than 20 years, 18% have done so for less than 5 years

Methods for the liaison with the drivers during the FOT execution

Email newsletters and SMS

Methods for data analysis, evaluation, synthesis and conclusions

Data spatially reference and analysed for speed compliance. Records analysed only when vehicle was travelling a minimum of 75% of the prevailing speed limit.

Sources of information

Full Results and Summary Fact Sheets on the NSW ISA Trial - http://www.rta.nsw.gov.au/roadsafety/downloads/isa_trial/isa_trial_results.html

Video: http://www.rta.nsw.gov.au/roadsafety/speedandspeedcameras/isa.html

Paper presented at the 2009 Intelligent Speed Adaptation Conference in Sydney: http://www.rta.nsw.gov.au/roadsafety/downloads/road_safety_conference/results_from_the_nsw_intelligent_speed_adaptation_trial.pdf

   Road Safety Technology Section
   NSW Centre for Road Safety
   Roads and Traffic Authority of NSW
   PO Box 477
   Wollongong NSW 2500, Australia
CompanyNSW Centre for Road Safety +
ContactJohn Wall +
CountryAustralia +
EndedNovember 30, 2010 +
Is type ofField operational test +
NameNSW Intelligent Speed Adaptation Trial +
Number of test users106 +
Number of vehicles114 +
StartedJune 1, 2008 +
Tested system or serviceIntelligent Speed Adaptation +
Websitehttp://www.rta.nsw.gov.au/roadsafety/downloads/isa trial/isa trial results.html +
Email
This property is a special property in this wiki.
John_wall@rta.nsw.gov.au +