Bad news for sharrows. Study out of U of Colorado shows that in Chicago, they provided negligible ridership increase and less of a safety benefit than nothing at all. https://t.co/Vme1HL8USC
— Meika Weiss (@MeikaSue) November 26, 2018
From a study out of University of Colorado sharrows may actually do more harm for bicycle riders than good.
But far from giving cyclists a safer ride, or even doing nothing at all, sharrows might actually be doing some harm by tugging bikes into moving traffic. Some research has found they do reduce dooring (when the door of a parked car hits a cyclist). But only one study to date looked at whether or not sharrows had any impact on overall car-bike collisions—and that study found they could be increasing the risk of injury.