publication . Article . 2011

Extended prediction models for crashes at roundabouts

Stijn Daniels; Tom Brijs; Erik Nuyts; Geert Wets;
Open Access
  • Published: 01 Feb 2011
Abstract
This paper builds upon the results of previously developed crash prediction models for roundabouts. The originally investigated sample was extended from 90 to 148 roundabouts. Poisson and gamma modelling techniques were used, the latter ones since underdispersion in the crash data was observed. Separate models were fit for crashes with six different types of road users: bicyclists, motorcyclists, passenger and heavy four-wheel vehicles, moped riders and pedestrians. A further distinction was made between single-vehicle and multiple-vehicle crashes. The results show that the overall number of crashes is more or less proportional to the number of motorized vehicle...
Subjects
free text keywords: Public Health, Environmental and Occupational Health, Safety Research, Safety, Risk, Reliability and Quality, Crash prediction models, Transport engineering, Types of road, Predictive modelling, Crash, Accident prevention, Roundabout, Engineering, business.industry, business, Crash data, Accident analysis
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