The Cambridge Civic Journal reports city officials have concluded so-called Icelandic crosswalks would cause more trouble than they solve in East Cambridge, because the optical illusions might cause some drivers to swerve to avoid them.

In one formal study, between 10-14% of drivers swerved upon seeing the markings, perhaps believing them to be real raised objects in the roadway. Swerving would not be a safe maneuver for either the driver or other users on the road.