On any given day, there are plenty of vehicles traveling on Interstate 29, Interstate 90, Interstate 190 (Rapid City), or Interstate 229 (Sioux Falls) in South Dakota.

But what sets the state's main transportation arteries apart from interstates across the country is the lack of bumper-to-bumper traffic that is commonplace in much more populated areas.

According to Best Life, a new report from TRIP Net shows that the Mount Rushomre State is one of only five states that is considered to have no congestion on their interstates.

Alaska, Montana, Vermont, and Wyoming are the others.

KKRC-FM / 97.3 KKRC logo
Get our free mobile app

STATES WITH THE LEAST TRAFFIC

  1. Alaska
  2. Montana
  3. South Dakota
  4. Vermont
  5. Wyoming
  6. West Virginia
  7. North Dakota
  8. Maine
  9. Mississippi
  10. New Mexico

As for the places where gridlock is a way of life, California, to the surprise of no one, has the most traffic, with 87 percent of the Golden State's interstates congested.

Maryland (83%) and New Jersey (81%) are the only other states where traffic congestion tops 80 percent.

The national average is 47 percent.

STATES WITH THE MOST TRAFFIC

  1. California
  2. Maryland
  3. New Jersey
  4. Delaware
  5. Florida
  6. Massachusetts
  7. Rhode Island
  8. Connecticut
  9. Hawaii
  10. Washington

Other findings from the study:

  • Only one percent of the pavement on South Dakota's interstates is considered to be in poor condition (national average is three percent).
  • More than half (55%) of South Dakota's interstate bridges are more than 50 years old, but none are considered to be in poor condition.
  • Combination trucks account for 18 percent of the vehicles traveling on South Dakota's interstates (national average is 11 percent). Only five states had higher rates.

See the Must-Drive Roads in Every State

LOOK: See how much gasoline cost the year you started driving

To find out more about how has the price of gas changed throughout the years, Stacker ran the numbers on the cost of a gallon of gasoline for each of the last 84 years. Using data from the Bureau of Labor Statistics (released in April 2020), we analyzed the average price for a gallon of unleaded regular gasoline from 1976 to 2020 along with the Consumer Price Index (CPI) for unleaded regular gasoline from 1937 to 1976, including the absolute and inflation-adjusted prices for each year.

Read on to explore the cost of gas over time and rediscover just how much a gallon was when you first started driving.

LOOK: Route 66’s quirkiest and most wonderful attractions state by state

Stacker compiled a list of 50 attractions--state by state--to see along the drive, drawing on information from historic sites, news stories, Roadside America, and the National Park Service. Keep reading to discover where travelers can get their kicks on Route 66.

More From KKRC-FM / 97.3 KKRC