Polisliknande varselväst för motorcyklister: hur påverkas samspelet i trafiken?

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To be easily detected by other road users, many motorcyclists use different types of high visibility vests. Even high visibility vests resembling those used by the police occurs both nationally and internationally. The purpose of this study was therefore to investigate whether and, if so, how motorcyclists’ interaction with protected road users (mostly car drivers) is influenced by the motorcyclists’ use of traditional high visibility vest and police-like high visibility vest. To study this, the interaction with protected road users was filmed using action cameras mounted on a motorcyclist who alternately drove with all black textile protective clothing without a high visibility vest, with a traditional high visibility vest or with a police-like high visibility vest. The results showed that there was no significant difference between the all black textile protective clothing without a high visibility vest, with a traditional high visibility vest or with a police-like high visibility vest regarding problemfree interactions (i.e. the interaction is unimpeded) and non-problem-free interactions (i.e. the interaction is disrupted in some way). On the other hand, there were significant differences between the drives with police-like high visibility vest and the all black textile protective clothing without a high visibility vest and the traditional high visibility vest, with regards to the distribution within the non-problem-free category. During the drives with police-like high visibility vests, a greater proportion of interactions were categorized as unexpected non-problem-free interactions (e.g. a protected road user suddenly slows down to legal speed), while a minor proportion of interactions were categorized as speed-related non-problem-free interactions (e.g. a protected road user drives faster than the speed limit when overtaking). In summary, the findings show that the use of police-like high visibility vests increase the proportion of unexpected non-problem-free interactions while reducing the rate of speedrelated non-problem-free interactions.

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