Abstract

This research investigates the complex relationship between roadway design and operating speeds and how drivers respond to these roadway design characteristics. It seeks to understand the effects of road geometry within a complex urban road environment on driver speed selection by conducting an advanced driving simulator experiment and an observational study completed in an Australian town. The results show that a reduction or an increase in lane width, the presence of posted speed signage or a change in the posted speed limit, horizontal curves, and centre line marking influence driver speed selections along low-speed urban corridors.

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