Increasing Motorcycle Conspicuity by Lars Rößger & Michael G. Lenné & Geoff Underwood

Author:Lars Rößger & Michael G. Lenné & Geoff Underwood
Language: eng
Format: epub
Publisher: Ashgate Publishing Limited
Published: 2015-04-20T04:00:00+00:00

Experiment 1 – Method

A first experiment (for further details see Rößger et al., 2012) was conducted using a set of still pictures (photographs) depicted on a computer screen. A set contained 44 photographs and represented real traffic scenarios at intersections. During the experiment, participants had been instructed to identify as fast as possible all relevant vehicles they had to pay attention to when they were planning to pull out into the main road or, respectively, to cross the intersection. That is, subjects were not sensitized in advance to search especially for motorcycles (for methodological considerations on search conspicuity vs. attention conspicuity see Gershon and Shinar in this book). In order to furthermore avoid unrealistic expectations, a motorcycle, either alone or together with other road users, was depicted in 10 photographs (test slides) whereas other motorists (cars, public transport) without a motorcyclists were represented at the remaining (reference slides).

Two between-factors have been varied: a) the light configuration of the motorcycles’ (control condition: solo headlight, experimental condition 1: T-light-configuration, experimental condition 2: T-light-configuration plus additional lights mounted at the rider’s helmet), and b) – (according to Hole and Tyrrell, 1995) – the consistency of MC’s light configuration in the final slide (inconsistent vs. consistent). The subjects (N=56, mean age=22.4, SD=5.1) were randomly assigned to the control group and to the experimental groups. We measured the time subjects required for identifying the relevant vehicles and gaze parameters when inspecting the intersection scenarios.

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