Tunnels on Blue Ridge Pkwy.

The area in Virginia from Peaks of Otter to the crossing of the James River is downhill for several miles. Take care of your brakes if going north and watch transmission temperature if heading south. This is the highest point on the parkway in the state of Virginia to the lowest point in Virginia. I personally believe this area is the main concern for anyone with a large rig. If you are heading south and pulling this long grade do not stop at the top, just keep moving until your engine/transmission cools down after this long pull, then pull over if you want. When going down hill just get on the brakes hard, bleed off about 10mph then let it coast back up to speed. Don't "ride" the brakes all the way down. By braking hard and then letting it coast you are cooling the pads. Also use a lower gear.