Saturday, November 23, 2019

21% of the pedestrians in an urban setting in Belgium violate traffic lights; presences of ush buttons and worn off zebra markings increase the frequency of violations

Non-compliance with pedestrian traffic lights in Belgian cities. Kevin Diependaele. Transportation Research Part F: Traffic Psychology and Behaviour, Volume 67, November 2019, Pages 230-241. https://doi.org/10.1016/j.trf.2016.11.017

Highlights
• 21% of the pedestrians in an urban setting in Belgium violate traffic lights.
• There is large variability; percentages below 15% and above 30% are no exceptions.
• Higher traffic volume and complexity reduce the frequency of red-light running.
• Gap acceptance theory can account for the effect of traffic volume and complexity.
• Push buttons and worn off zebra markings increase the frequency of violations.
• Auxiliary signals, either visual or auditory, have a lowering effect on violations.


Abstract: The frequency of red light running was investigated across the nine most populated cities in Belgium. The results show that approximately 21% of the pedestrians violate the lights. There is, however, large variability in the frequency of violations depending on the specific context. Traffic volumes, motorized as well as pedestrian volumes, and situational characteristics that are generally associated with higher traffic complexity (rush hours, number of driving directions, number of lanes per driving direction and the presence of a tram or bus lane) have a lowering effect. A number of technical characteristics of the pedestrian crossing were also found to exert a significant influence: push buttons and worn off zebra markings increase the frequency of violations. On the other hand, auxiliary signals, either visual or auditory, have a positive effect.

Keywords: PedestriansRed light runningBelgium


5.5. Push buttons
Fig. 4 illustrates the effects of situational characteristics which are not clearly associated with motorized traffic volumes and apply to the technical design of the pedestrian crossing. The first effect of this kind concerns push buttons: when push buttons are present, we see a significantly higher degree of red light violations by pedestrians. One could argue that this is due to the fact that these locations are associated with a lower overall pedestrian volume (see top left panel in Fig. 4). With fewer pedestrians passing, the chance of arriving during a red phase will on average be higher because a green phase only occurs when pedestrians make a request. Red light violations may thus be observed more frequently than in the absence of push buttons without any inherent effect of push buttons on the willingness to commit red light violations among pedestrians. The above explanation nevertheless also predicts a clear effect on the phase frequency, i.e., a reduced number of phases per time unit for crossings equipped with push buttons. Such an effect is not evident in the data. In the light of this, it is important to consider the alternative explanation that in many cases, the presence and functional characteristics of push buttons are not transparent enough for pedestrians. In Belgium, several different designs of push buttons exist with heterogeneous functional characteristics. Waiting times after requests are generally not transparent. The lack of transparent information about waiting times has indeed been shown to exert a strong negative influence on safe crossing behaviour by pedestrians (e.g., Eccles et al., 2007; Markowitz et al., 2006; Schlabbach, 2010).


5.7. Visibility of zebra markings

The last effect concerns the visibility of the zebra marking. It appears that pedestrians are more inclined to commit red light violations when zebra markings are in bad condition (i.e., the paint is worn off; see Fig. 5). This effect is intriguing, as it cannot be linked to marked differences in pedestrian and/or vehicle traffic volumes which could explain the degree of wear and tear. An interesting hypothesis is that the effect illustrates the interaction of physical spaces and social norms. Keizer, Lindenberg, and Steg (2008), for instance, provided several demonstrations of so-called ‘‘spreading of disorder” phenomena.
The idea is related to the so-called ‘‘Broken window theory” in criminology (Kelling & Wilson, 1982) and entail that public spaces that are unorganized and show traces of decay and criminal activity facilitate illegal and anti-social behaviour. The classical example is that people are more inclined to litter in a poorly maintained public space. Keizer et al. argue that spreading of disorder can also translate itself into very subtle phenomena such as traffic rule violations. In the present context, it was certainly not the case that poorly visible zebra markings were always associated with a generally ill-maintained area. More specific underlying dynamics could be that pedestrians associate poor investments in traffic infrastructure with low levels of police enforcement or even low risk levels.

No comments:

Post a Comment