Which factor contributes to fender benders while entering traffic circles?

The factor that significantly contributes to fender benders while entering traffic circles is misjudging other vehicle speeds. When drivers enter a traffic circle, they must be able to accurately assess the speed and distance of vehicles already circulating within the roundabout. Misjudging these factors can lead to premature entry into the circle, resulting in collisions with vehicles that are closer than anticipated. This is particularly critical because the dynamic flow of vehicles can vary greatly depending on how fast they are traveling, which may not always be easily discernible to drivers waiting to enter.

In the context of driving behavior, if a driver underestimates the speed of an oncoming vehicle, they may attempt to enter the traffic circle at an inappropriate time, leading to potential collisions. Recognizing that traffic conditions can change rapidly in these environments is essential.

Other contributing factors like improper lane changes, impatience while waiting, and lack of traffic signs also play roles in fender benders. However, they are not as directly tied to the specific challenge of accurately gauging the speed of other vehicles, which is the primary concern when navigating traffic circles. Proper education about speed perception and awareness of surrounding traffic is vital for safe navigation in such scenarios.