Quick Response Freight Manual-Final Report

Appendix D

D-4e. Trip Generation Summary - Regression Formulas for Daily Commercial Vehicle Trips for Other Land Uses (Unclassified - SIC 89)

Location	Land Use Type (SIC)	Date	4-Tire Commercial Vehicles	6+ Tire Commercial Vehicles		All 6+ Tire Commercial Vehicles	All Commercial Vehicles	R2	Notes/Comments
				Single Unit	Combination Unit
NE Illinois/NW Indiana - Eight Counties (pop. over 8 million)	Commercial	1981			515.7 + (18.9*COML)		1.69 + (1.73*N) - (0.02*N2)	0.17 to 0.22	COML = Commercial land in the district. See note 5.
NE Illinois/NW Indiana - Eight Counties (pop. over 8 million)	Commercial	1981	1,112.2 + (9.76*COMEMP)	2,492.1 + (3.6*COMEMP)	305.7 + (2.2*COMEMP)		2,252.7 + (23.7*COMEMP)	0.18 to 0.50	COMEMP = Employment at commercial sites. See note 5.
Columbus, Ohio (pop. 1.1 million)	Commercial Oriented	1980					54.6 + (0.51*INE) + (0.18*CGE)	0.35	INE = Industrial non-manufacturing employment; CGE = Commercial and government employment. See note 5.
Flint, Michigan (pop. 593,000)	Commercial Oriented	1980					73.3 + (0.59*CE) + (0.36*TDU)	0.47	CE = Commercial employment; TDU = Total dwelling units. See note 5.
Saginaw, Michigan (pop. 236,000)	Commercial Oriented	1980					11.9 + (0.38*TDU) + (0.37*TE)	0.65	TDU = Total dwelling units; CE = Commercial employment. See note 5.
NE Illinois/NW Indiana - Eight Counties (pop. over 8 million)	Residential (88)	1981	762.7 + (5.43*DU)				416.7 + (16*DU)	0.21 to 0.37	DU = Dwelling units. See note 5.
NE Illinois/NW Indiana - Eight Counties (pop. over 8 million)	Residential (88)	1981	-188.8 + (35.38*RESL) + (2.86*DU)				1078.6 + (56.5*RESL) + (11.7*DU)	0.54 to 0.55	RESL = Residential land in the district; DU = Dwelling units. See note 5.
NE Illinois/NW Indiana - Eight Counties (pop. over 8 million)	Public Buildings	1981	196.5 + (20.92*PB)				112.6 + (73.6*PB)	0.17 to 0.43	PB = Public buildings in the district. See note 5.