NASHVILLE, Tenn. (AP) — The Tennessee Supreme Court’s ruling involving two cases could limit or expand police powers to make traffic stops.

The Tennessean reports (http://tnne.ws/1LjSYul) in both cases going before the court this month, justices will have to decide how many times do drivers have to cross road lines before police can stop them for a traffic violation.

The cases, which are from Williamson and Knox counties, involve drivers who were stopped by police after crossing road lines only once and for a brief amount of time. Each driver was charged with DUI.

In both cases, the attorney general argues that even the brief line crossing violates the law and is enough to warrant a traffic stop.

In the first seven months of this year, Nashville police made 216,000 traffic stops.