There usually is on any state property.
My guess would be yes. It's a city owned property, so all local laws would be enforced. I've walked the walking trails, and only seen the bike trails, but they look fairly rugged. I wouldn't try them bare-headed.
I don't know for sure if a helmet policy is in place. The park is owned by the Town of Mount Airy. I would wear a helmet due to my own preference. A helmet is a lot cheaper than a trip to the ER with a head injury.
Yes i would imagine there are but i haven't seen any bike trails yet.
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