I was visiting Woodland Park for about a week and happened to be there between snow storms. The days were about 60F and the nights were around 30F, mild winds. 

I found the roads to have many impassable patches unless you have 4x4 though during more mild seasons, I would think any vehicle could get around on the roads. I've posted the signs for warnings and such. 

Given that I have a capable off-road vehicle, I was able to explore a bit and found a good pull off on the crest of a hill. I arrived each day just at sunset and left each day just after sunrise so I was pretty much just there to sleep. As a result, I didn't set up a proper campsite with fire, cooking set up and what-have-you. The sunset and sunrise were beautiful and the area was quiet for the most part. 

Each night, 3-4 vehicles drove (or attempted to drive) along the road down the hill from me. It didn't disturb me, I just took notice. Most turned around as they couldn't get past the first drift. One night, 7-8 large 4x4 vehicles roared around my site and stopped on the road for about an hour around 10:30pm. They roared off and didn't return. That was the only real disturbance I had and I don't begrudge them - everyone enjoys the outdoors in their own way. Let's just try to do it during the day next time, ok guys? Cheers.

The road leading to the area is paved and just feels like a regular rural road. It forks, you take the left fork, and come to a sign that says you're entering National Forest Land. After a bit, you come to a circuit of dirt roads that have signs for the most part. The dirt roads were VERY wash boarded when I was there and slowed me down a lot. 

Anyway - it was better than paying for a campsite or $120 per night for a hotel and I enjoyed myself.