Abstract
Roundabouts have increased in a significant way in recent years in Moroccan cities as they have been seen as a solution to congestion problems and traffic safety issues. However, roundabouts are relatively new to Moroccan drivers and the rules of priority to which the users are accustomed are reversed in roundabouts. This can lead to confusion and misleading. The overall objective of this study is to identify roundabout features that appear to play a role in the difficulties that drivers encounter when crossing roundabouts. This paper will present a comprehensive understanding of what is required of drivers when crossing roundabouts. We then predict failures that can occur at roundabout using our driver error taxonomy. A case study of two roundabouts in Morocco is analyzed as illustration. The paper concludes with implications of the findings to future design.
Highlights
Today, Moroccan cities are experiencing, as elsewhere in the world, congestion problems characterized by increased travel time, and even bottlenecks
The taxonomy of driver error developed, aims to provide an operational framework to enhance understanding of human functional failures, consistent with cognitive concepts and adapted to the driving task of crossing roundabouts. It could serve as a good basis for analysis of deviant behaviours that are likely to occur at roundabouts in Morocco but in other countries worldwide
The results of our study address that there is a general lack of awareness and understanding on the part of most drivers regarding roundabouts
Summary
Moroccan cities are experiencing, as elsewhere in the world, congestion problems characterized by increased travel time, and even bottlenecks. This congestion is a result of high volume of traffic, and little available space. In addition extensive studies have been carried out on benefits of roundabouts in the following areas: traffic calming effects due to the creation of a low speed environment and the elimination of conflict points, reduced delay and concomitant emissions [5,6,7], capacity and quality of traffic flow [8]. The priority is giving to circulating traffic rather than entering traffic. This means that the driver entering the roundabout must give priority to driver that comes on his left
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