Rundkørsler er ikke sikre for cyklister - Cykelviden

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Rundkørsler er ikke sikre for cyklister - Cykelviden

facility or converting the roundabout to an intersection would improve

safety.

No significant relation was found between the existence of a cyclist facility

in a roundabout and the number of cyclist accidents. Despite a number of

attempts through the years, no other Danish data have succeeded in establishing

a firm road safety effect of cyclist facilities.

Results from the interview study showed that the perception of risk was

lower in roundabouts with more than 10.000 entering vehicles per day.

In the third part of the study, a statistically significant positive relation between

the number of vehicles entering the roundabout per 24 hours and

the number of cyclist accidents in the roundabouts was found. The number

of cyclist accidents is usually described as levelling off with increasing

numbers of vehicles entering the roundabout. The result is that risk per

cyclist remains constant with a high number of vehicles entering the roundabout.

The results of the interviews and the statistical model both pointed at a

positive relation between the number of cyclists entering the roundabout

and cyclist accident risk. This may be due to crowding at the cyclist facility

which increases the risk of single cyclist accidents as well as other cyclist

accidents. In the interviews, some of the cyclists mentioned that larger cyclist

facilities would increase cyclist safety in the roundabouts. This is in

accordance with the crowding hypothesis.

There was a good correlation between the situations perceived as dangerous

by the cyclists and the actual risk. In both cases, the most dangerous

situation is the case of a circulating cyclist and a vehicle entering or leaving

the roundabout.

A significant effect of age and gender was found. Women and younger cyclists

were more likely to perceive the risk as high.

According to the interviewed cyclists vehicles make roundabouts unsafe for

cyclists. Their answers indicate that they believe that fewer and slower vehicles

would improve the safety of cyclists cycling in a roundabout.

Potential vehicle speed through a roundabout turned out to be significantly

related to the number and the probability of cyclist accidents. The faster

vehicles potentially could go through the roundabout, the more cyclist accidents.

This indicates that roundabouts should be designed in a way that

forces the drivers to deflect somewhat from a straight line to go through

the roundabout in order to minimise the number of cyclist accidents. That

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