Comment by rjdagost

One of the big differences between the US and Europe in this regard is the much larger proportion of bicyclists in Europe. In Europe, the larger number of bicyclists trains you as a driver to always be on the lookout for them. Driving past a bicyclist in the US is a much rarer event. Drivers should of course always be vigilant for anything in their way, but as a practical matter it's easier to mentally drift off when bicyclists are much less common.