Iowa DOT

Volume of Traffic on the Primary Road System

Route	2015	Rural/Municipal	Section length (miles)	Annual average daily traffic	Vehicle classification distribution of annual average daily traffic											Average daily vehicle miles
	2015				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	81 Sac COUNTY
20	JUNCTION IA 110	Rural	1.700	3250	12	2261	977	24	115	25	3	78	669	27	37	5525	1661
20	US 71 INTERCHANG	Rural	7.203	3320	13	2406	901	17	82	18	2	75	647	26	36	23914	6490
20	EAST-NORTH EAST-SOUTH RAMP*	Rural	0.344	660	3	551	106	4	20	4	0	7	64	3	4	0	0
20	NORTH-EAST SOUTH-EAST RAMP*	Rural	0.295	540	2	434	104	2	11	2	0	8	73	3	4	0	0
20	WEST-NORTH WEST-SOUTH RAMP*	Rural	0.346	500	2	395	103	3	14	3	0	8	69	3	4	0	0
20	NORTH-WEST SOUTH-WEST RAMP*	Rural	0.260	450	2	363	85	2	9	2	0	7	59	2	3	0	0
20	INTERSECTION CO RD M50*	Rural	3.040	4730	20	3700	1010	22	106	23	2	82	707	28	38	14379	3070
20	INTERSECTION CO RD M54*	Rural	5.497	4730	20	3700	1010	22	106	23	2	82	707	28	38	26001	5552
20	IA 196 INTERCHANGE*	Rural	1.941	4750	20	3721	1010	22	106	23	2	82	707	28	38	9220	1960
20	EAST-NORTH EAST-SOUTH RAMP*	Rural	0.346	340	1	176	163	2	8	2	0	14	125	5	6	0	0
20	NORTH-EAST SOUTH-EAST RAMP*	Rural	0.299	400	1	220	178	2	11	2	0	16	134	5	7	0	0
20	WEST-NORTH WEST-SOUTH RAMP*	Rural	0.307	400	2	333	65	3	15	3	0	4	36	1	1	0	0
20	NORTH-WEST SOUTH-WEST RAMP*	Rural	0.290	430	2	359	69	3	15	3	0	5	39	2	2	0	0
20	WEST LINE OF CALHOUN COUNTY*	Rural	5.035	4470	17	3141	1312	23	112	25	3	110	950	38	52	22506	6606
	ROUTE SUMMARY - RURAL		26.903	3818												101545	25339