Frequent drivers of a certain route often wonder why an extra lane is not open during heavy traffic. A driver who uses this route several times a week expresses frustration when traffic is slow but the additional lane remains closed. This driver has seen long stretches of congested traffic while signs above indicate the lane is not in use.

The reason for this is explained by the Michigan Department of Transportation. Further details about the flex lane's operation are available.

A video report provides more information on this topic, including an explanation from the transportation department.