The speed limit varies from 40 miles per hour in Twin Mountain to 55 mph (89 km/h) over the remainder.

Much of the road skirts the White Mountain National Forest or other wildlife conservation land.

The Mountain View Grand Hotel is also visible, as is the Mount Washington Regional Airport, both in Whitefield.

In the 1980s, the road was significantly simplified, widened and straightened, resulting in a new alignment to the south of NH 115B.

The increased speeds of the improved route may have directly contributed to a significant number of tragic moose-vehicle collisions in recent years along that section.