They look swell, they add curb appeal, they are super-durable. What's
not to like about granite "Belgian block" curbing ? One does need to
be extra-careful with ones parallel parking, lest one join the ranks of
motorists who have ruined their tire !!
In the event of a bicyclist who loses control and crashes, they are a hazard.
Excerpt below is from a letter by Ithaca's town planner to a developer: