Yazar
david l harkey
4 cilt bulundu.
Cilt sonuçları
Safety impacts of different speed limits on cars and trucks
David L. Harkey · Available through the National Technical Information Service
59 sayfa · 1994
Traffic accidents / Truck accidents / Speed limits
PEDSAFE
David L. Harkey · U.S. Transportation, Federal Highway Administration
324 sayfa · 2004
Pedestrians / Safety measures / Pedestrian facilities design / Pedestrian accidents
The bicycle compatibility index
David L. Harkey · U.S. Dept. of Transportation, Federal Highway Administration, Research and Development, Turner-Fairbank Highway Research Center
47 sayfa · 1998
Route choice / Traffic safety / Bicycle trails / Bicycle commuting