Bike Safety - riding at night or alone on trails

[OakLeaf]

Also, I have heard of people stringing a rope across the trail to make you fall

Monofilament and thin wire are just as invisible during the daytime as they are as night. Every time I've heard of that happening, the people who've gotten hurt have been riding in the daytime. It's a valid concern - yes, a little bit paranoid, but some people are just vicious - but it's more like a fear of having things thrown at you while road riding. Or of being shot at. It's really not a day/night thing.

I think it's more likely to be directed against moto trails than bici trails too, at least I've heard of it happening more often on moto trails.

[indysteel]

While I know plenty of people who don't respect this rule, our local MUT "closes" at night. No one is supposed to be on it. The OP should verify whether her local trails have a similar restriction.