Iowa DOT

Volume of Traffic on the Primary Road System

Route	2007	Rural/Municipal	Section length (miles)	Annual average daily traffic	Vehicle classification distribution of annual average daily traffic											Average daily vehicle miles
	2007				Motorcylces	Cars, vans and pickups	Total trucks and buses	Single unit trucks				Combination trucks				All vehicles	Trucks and buses
	Primary route section description							Single unit trucks				Combination trucks
	Primary route section description							Buses	2Axles	3Axles	4 or more axles	4 or less axles	5Axles	6 or more axles	Multiple trailers
20	7 Black Hawk COUNTY
20	WEST LIMITS OF CEDAR FALLS	Rural	2.981	12000	104	9847	2048	41	180	71	9	488	1140	83	36	35772	6105
20	IA 58 INTERCHANGE	Municipal	0.523	11800	103	9687	2009	41	176	70	8	479	1118	81	35	6171	1051
20	IA 27 INTERCHANGE AT EAST LIMITS OF CEDAR FALLS &
20	WEST LIMITS OF HUDSON	Municipal	1.091	15400	139	13112	2148	54	234	92	11	491	1146	83	36	16801	2343
20	EAST LIMITS HUDSON &
20	WEST LIMITS WATERLOO *	Municipal	0.385	23600	221	20845	2532	70	302	119	14	566	1323	96	42	9086	975
20	US 63 INTERCHANGE *	Municipal	1.675	23600	221	20845	2532	70	302	119	14	566	1323	96	42	39530	4241
20	ANSBOROUGH AVENUE INTERCHANGE *	Municipal	1.532	27400	196	24320	2879	70	378	182	17	406	1667	112	45	41977	4411
20	IA 21 INTERCHANGE *	Municipal	1.508	26700	191	23623	2881	70	377	182	17	407	1670	113	45	40264	4345
20	I 380 & US 218 WEST INTERCHANGE	Municipal	1.782	25700	183	22707	2805	64	346	167	16	403	1653	111	45	45797	4999
20	DUPLICATE ROUTE WITH I 380 I 380 EAST INTERCHANGE TO
20	CO RD V51 INTERCHANGE	Rural	1.511	12100	110	10354	1635	54	234	92	11	347	812	59	25	18283	2470
20	WEST LINE OF BUCHANAN COUNTY	Rural	4.973	10300	92	8642	1565	47	205	81	10	341	797	58	25	51222	7783
	ROUTE SUMMARY - RURAL		9.465	11123												105277	16358
	ROUTE SUMMARY - MUNICIPAL		8.496	23497												199626	22365