Big changes have hit some of Idaho’s largest highways.
On July 1, speed limit signs for heavy-duty trucks started coming down on major roadways, including Interstate 84 east of Boise, as a new state law took effect.
House Bill 664 did away with Idaho’s split speed limits, which capped the maximum speed for trucks weighing more than 26,000 pounds at 70 mph on rural stretches of interstates…