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South Dakota Traffic Volume

Vehicle miles traveled, latest August 2026 (preliminary)

August 2026
1 billion
vehicle miles
Change from a year earlier
-2.0%
Last 12 months
10.7 billion
+0.4% from the year before
Rank among states
#43
By vehicle miles traveled

Vehicle miles by month

Millions of miles

South Dakota vehicle miles traveled by month, millions

Monthly travel

Swipe the table sideways to see more columns.

MonthVehicle milesA year earlierChangeStations
August 2026preliminary1 billion1 billion-2.0%40
July 20261 billion1 billion+0.7%42
June 2026990 million984 million+0.6%45
May 2026982 million968 million+1.4%44
April 2026867 million863 million+0.5%41
March 2026846 million826 million+2.4%44
February 2026743 million680 million+9.3%37
January 2026763 million747 million+2.1%41
December 2025799 million798 million+0.1%39
November 2025840 million840 million0.0%39
October 2025923 million915 million+0.9%37
September 2025915 million909 million+0.7%35
August 20251 billion994 million+2.7%36
July 20251 billion992 million+2.3%37
June 2025981 million953 million+2.9%41
May 2025966 million965 million+0.1%43
April 2025860 million841 million+2.3%41
March 2025823 million802 million+2.6%40
February 2025678 million703 million-3.6%40
January 2025745 million719 million+3.6%37
December 2024796 million797 million-0.1%37
November 2024838 million836 million+0.2%35
October 2024983 million982 million+0.1%36
September 2024941 million957 million-1.7%37
August 2024993 million992 million+0.1%37
July 2024974 million971 million+0.3%39
June 2024929 million952 million-2.4%40
May 2024948 million936 million+1.3%41
April 2024833 million808 million+3.1%40
March 2024795 million764 million+4.1%40
February 2024684 million647 million+5.7%41
January 2024677 million676 million+0.1%40
December 2023789 million704 million+12.1%40
November 2023830 million787 million+5.5%40
October 2023926 million891 million+3.9%39
September 2023903 million898 million+0.6%37

Vehicle miles traveled are FHWA estimates built from about 5,000 continuous traffic counting stations that states operate, expanded to all public roads. The latest month is preliminary and is revised in the next month's report; percent changes compare the same month a year earlier. Where a state reported no stations, FHWA estimates its travel from nearby states or the national trend.

Traffic crashes in South Dakota · Bridge conditions in South Dakota

Source: Federal Highway Administration, Traffic Volume Trends, Table 5 · Last updated 08/01/2026