little trivia

Ok so at Disneyland the posted speed limit is 14 miles per hour
the question is:
why did Disneyland pick a odd number to use for there speed limit:

I know people will Google the answer but lets see what you know about Disneyland :)

Ive seen people that think its because if it was 15 miles per hour the police could issue tickets and have to patrol the grounds This is False the police can patrol the ground regardless.

so whats your guess?