Size ristrictions at state/federal parks

We've found that sometimes the site length restrictions are related more to the access roads than to the actual site dimensions. We've in a few where we just met the length limit and the road in or access to the site was really a tight squeeze for us. The site itself though, was plenty big enough. On the other hand, we've also been to a few parks where the length limit on some sites either just don't make sense or the park has update the sites without updating the limits. That has caused us to fib about our length a few times when reserving sites that we knew were plenty long enough and easily accessible.