Speeding makes things (bad things in particular) happen faster and at a greater intensity. Speed is also a problem when others on the public highway do a mental calculation as to whether or not to merge/turn left based on thinking that YOU are within reasonable tolerance of the speed limit. If you are substantially over the limit, those merging/turning left most likely will miscalculate the closing rate which very likely will cause you serious physical harm.
Traffic radar operation and it's avoidance require considerable understanding and applied technique. The two principal posters Greenberg and deilenberger have presented a wealth of info.
Comments from a former City administrator come off as plain old "sour grapes"