ID S1028

Establishes maximum speed limit of 75 miles per hour on interstate highways, with potential increase to 80 miles per hour if the department completes an engineering and traffic study and the transportation board concurs that the increase is in the public interest

Sets maximum speed limit of 65 miles per hour on state highways, with potential increase to 70 miles per hour following completion of an engineering and traffic study with transportation board concurrence

Maintains 35 miles per hour limit in residential, business, or urban districts unless otherwise posted

Establishes 55 miles per hour limit in other locations unless otherwise posted up to a maximum of 70 miles per hour

Imposes lower speed limits for heavy vehicles with five or more axles exceeding 26,000 pounds gross weight: 10 miles per hour less than standard limits on nonurban interstate highways and maximum 65 miles per hour in urban areas