Abstract
Rest areas are required on the Interstate highways to provide safe stopping places. Yet the cost of constructing and maintaining rest areas with toilets, picnicking facilities, water for drinking, and other facilities is very high, and it is certainly not desirable to construct more facilities than needed. The 1968 National Rest Area Usage Study was undertakes to assist in determining rest area needs in terms of facilities and spacing by measuring the present demand for and characteristics of the use of existing rest areas.