Iowa DOT News Release

Iowa DOT begins traffic information collection in Southwest Iowa

Posted on: May 26, 2020

AMES, Iowa - May 26, 2020 - The Iowa Department of Transportation is working across the state this spring and summer, as we do every year, to determine how many cars, trucks, and other vehicles are using the state, county, and city roadways. The information gathered allows transportation officials to better predict traffic volume and weight trends, allowing them to plan improvements that will give Iowans the most benefit for each dollar spent.    

This year's efforts are concentrated in southwest Iowa, but occasionally crews will work elsewhere in the state. Some employees will spend peak hours between 7 a.m. and 6 p.m. at a location counting the morning, noon, and evening traffic. They count and classify vehicles, record vehicle turning movements, and gather other data necessary to assist in planning the future of Iowa's roadway system.

Other employees will be placing and checking portable traffic recorders in the same general areas. When the recorders are set, they usually record data for one or two days and are checked periodically.

Other statewide work scheduled for this summer includes the installation, upgrading, and maintenance of permanent traffic recorders and weigh-in-motion equipment at continuous count station locations. With the COVID-19 pandemic, these recorders have shown reduced traffic totals. The manual counts and temporary recorders are used each year, as they will be this year, to collect additional data.

Employees responsible for the recorders work various shifts, including hours outside of a traditional business day.

People in the area can expect to see Iowa DOT employees and vehicles in their communities all hours of the day. All of this work is critical to the future of the state's transportation system.


Contact: Mark Hansen at 515-239-1990 or

Iowa highway in the evening