All signs in the parks are official. It is important and helpful to read
them.
The motorist should observe the road signs, always have his car under
full control, keep to the right, and sound horn when on curves that are
blind.
Speed must not exceed 15 miles an hour on grades when rounding sharp
curves. On straight open stretches the speed must not exceed 35 miles an
hour. Speed limit signs inform the driver of maximum speeds allowed in
the various areas. Careful driving is required at all times. Descend
hills in gear, and drive more slowly downhill than uphill. These are
scenic roads; take time to enjoy them.