我还真知道有这个辩护，楼主可以参考，
Daytime Standing Defense
A seldom known rule is that you are allowed to park at a hydrant so long as [1] it's during the daytime; [2] a licensed driver sits behind the wheel of the vehicle; and [3] the driver is ready, willing and able to move the vehicle upon request. Have an letter written up by the driver explaining the circumstances and the ticket should be dismissed. WARNING: The daytime standing defense does not work at nighttime... because then it wouldn't be daytime. The definition of "daytime" is the time when the sun it up til it comes down.
