Which of the following is NOT considered a traffic calming measure?

Traffic calming measures are designed to reduce vehicle speeds and improve safety for pedestrians and cyclists on roadways. Measures typically include physical changes to the road environment that encourage drivers to slow down and pay more attention to their surroundings.

Speed bumps, roundabouts, and traffic circles all serve to slow traffic by altering the roadway's geometry. Speed bumps create a physical obstacle that must be navigated slowly, which directly controls vehicle speed. Roundabouts and traffic circles manage traffic flow in a way that requires vehicles to reduce speed to navigate the curves effectively.

In contrast, extra wide lanes can inadvertently encourage faster driving speeds, as wider lanes may provide a sense of increased roadway capacity and encourage drivers to feel more comfortable accelerating. Therefore, extra wide lanes do not function as a traffic calming measure; rather, they could contribute to higher speed limits and less attention to safety among drivers.