Roundabouts are not really cutting edge, but they are new to many of us in the slow-on-the-uptake Commonwealth of Pennsylvania. Here’s a video on what you are supposed to do.

One thing drivers are NEVER supposed to do is pass a bicyclist in the lane, in a roundabout or anywhere else. I observe that most drivers and bicyclists are confused about this. Not only do bicyclists often hug the right edge of the lane, drivers tend to speed up as they pass them, which is going to be deadly if anything unexpected happens. Under our state law, cars have to give bikes 4 feet of space. Lanes are around 12 feet wide, so this means a car centered in the lane cannot physically pass a bike legally. Police do not enforce this rule, and signs stating it are very rare. We occasionally see the “BIKES MAY USE FULL LANE” sign, but a better sign, which I have seen in other states, adds “CHANGE LANES TO PASS”. Separated, protected lanes for low-momentum zero emissions vehicles with their own signals at intersections would be the superior, most modern way to go, of course.