Iowa DOT

Volume of Traffic on the Primary Road System

Route	2002	Rural/Municipal	Section length (miles)	Annual average daily traffic	Vehicle classification distribution of annual average daily traffic											Average daily vehicle miles
	2002				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	2.972	7300	58	6243	999	18	169	87	20	173	475	34	24	21696	2969
20	IA 58 INTERCHANGE	Municipal	0.529	7300	58	6243	999	18	169	87	20	173	475	34	24	3862	528
20	IA 27 INTERCHANGE AT EAST LIMITS OF CEDAR FALLS &
20	WEST LIMITS OF HUDSON	Municipal	1.087	9900	81	8765	1053	23	210	107	24	169	464	33	22	10761	1145
20	EAST LIMITS HUDSON &
20	WEST LIMITS WATERLOO	Municipal	0.380	17400	146	15718	1534	34	315	161	36	242	665	48	32	6612	583
20	US 63 INTERCHANGE	Municipal	1.696	17400	146	15718	1534	34	315	161	36	242	665	48	32	29510	2602
20	IA 21 INTERCHANGE	Municipal	3.039	21100	129	19116	1852	57	346	198	22	190	943	63	33	64123	5628
20	I 380 & US 218 WEST INTERCHANGE	Municipal	1.778	18800	113	16804	1879	55	334	191	22	198	981	66	34	33426	3341
20	DUPLICATE ROUTE WITH I 380 I 380 EAST INTERCHANGE TO
20	CO RD V51 INTERCHANGE	Rural	1.516	11300	92	9857	1350	20	183	94	21	253	696	50	34	17131	2047
20	WEST LINE OF BUCHANAN COUNTY	Rural	4.991	9500	76	8177	1246	17	158	81	18	238	655	47	32	47415	6219
	ROUTE SUMMARY - RURAL		9.479	9098												86242	11235
	ROUTE SUMMARY - MUNICIPAL		8.509	17428												148294	13827