Idaho to Put Variable Speed Limit Signs on Stretch of I-15
IDAHO FALLS, Idaho (AP) — Idaho is preparing to install the state's first variable speed limit signs on a stretch of Interstate 15.
The signs will allow transportation officials to wirelessly lower the 80 mph speed limit during dust storms. The Idaho Department of Transportation plans to pour foundations for the signs Monday. They'll go up on a 1.5 mile stretch of highway north of Idaho Falls. The area has experienced multiple vehicle pileups in recent years.
The Post Register reports the area is particularly prone to dust storms when fields are bare and winds are high. State officials hope the signs will allow them to keep the freeway open longer during times of poor visibility. If they work well, officials may consider putting them in other areas prone to dust storms.