Human factors aspects of navigation systems in support of intelligent speed adaptation (ISA) functionality

Ian Faulks, Julie D. Irwin, Michael Paine, David Paine

    Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution


    This paper reports a study of the performance of in-vehicle navigation devices to assess speed-related functionality and the provision of speed information to drivers. There are currently no standards or assessments protocols for navigation devices that are complete and that are directly relevant to the assessment of commercially available intelligent speed adaptation (ISA) devices. Human factors research is not conclusive about the best ways to convey speed limit information and speeding alerts to drivers, and a review of the literature indicated that there are some human- machine-interface methods that should be avoided in the driving task. Protocols for the assessment of navigation devices should avoid being design restrictive, but should discourage poor interface design concerning speed limit information and speeding alerts to drivers. A protocol was developed to evaluate in-vehicle navigation devices offering an ISA capability. The intended outcome from the use of this protocol is to assist consumers in decisions to purchase these devices. Four ISA devices currently available on the Australian market were tested on-road in a scenario incorporating freeway, commercial and residential environments, similar to how the devices would be commonly used. The results indicated that the protocol was very robust, being repeatable, relevant and objective, and can be used as the basis for the development and promulgation of a standard for the assessment of the safety of in-vehicle navigation devices with an ISA capability.
    Original languageEnglish
    Title of host publicationProceedings of the Australasian College of Road Safety Conference 2012, a safe system
    Subtitle of host publicationexpanding the reach, Sydney, New South Wales, Australia
    Place of PublicationSydney
    PublisherAustralasian College of Road Safety
    Number of pages17
    Publication statusPublished - 2012
    EventAustralasian College of Road Safety Conference - Sydney
    Duration: 9 Aug 201210 Aug 2012


    ConferenceAustralasian College of Road Safety Conference


    • Advanced driver information systems (ADIS)
    • Intelligent speed adaptation (ISA)
    • Human factors
    • Navigation
    • Field study
    • Evaluation


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