A survey was taken of vehicle use in Grand Teton National Park. Visitor numbers to national parks increase each year, and the visitors are bringing an increasing number of motorized vehicles to the parks including boats, motor-bikes and cars towed in by motor-coaches. In August there was an average number of 547 vehicles per hour passing Moran Jct. There is an average of 3.3 people per car, making 1800 people per hour passing this one point.
"Survey of Vehicle Use in Grand Teton National Park,"
Jackson Hole Research Station Annual Report: Vol. 1968
, Article 19.
Available at: http://repository.uwyo.edu/jhrs_reports/vol1968/iss1/19