The way it works out west is you drive down a BLM or National Fores road until you find a spot your vehicle can fit in beside the road. How far off the road you can go varies by area. The three most common rules are
1) One Vehicle length
2) 30 feet
3) 300 feet.
I was just in the Bighorn NF in Wyoming and asked a Ranger about a specific road I wanted to camp on and he said it was a great spot with 4g signal and a great view. But it's often full and if it was I could just pull over and park in the grass. That's exactly what I did and he came down the road the next morning and we visited again and had a pleasant conversation. He gave me some great photography tips for the area.
I've been in Wyoming for 2 months and every night has been dispered camping in some incredibly beautiful spots.
Bob
