In article , Frank Krygowski wrote:

If more drivers thought like Mark, traffic calming measures like speed
humps would be much less necessary. And I think all of us would prefer
that.

Great. So fix the interstate speed limits and work your way down the
scale of roads. Then you won't have people doing 40 on a 20 mph
residential street any longer because speed limits will have their
meaning restored. It's wrong to have speed limits that meaningful in
some places (residential streets) and totally meaningless elsewhere
due to severe underposting (55mph posted interstates)