The left lane is only to be used as a passing lane in most cases, according to Louisiana State Police Troop I spokesperson Brooks David.

"If you're in the left lane, you're only supposed to be passing," David said. "You're not supposed to be traveling in the left lane at or below the speed limit of the person on the right side of you or if you're traveling ten miles below the speed limit. That is illegal."

David said there are exceptions in cases of congested traffic, and in some cases, police may have to exercise judgment when deciding whether or not to issue a citation.

Also on "Ask the Trooper":

  • What is the difference between the state police Troop I headquarters and the Region II facility in Breaux Bridge.
  • What is the proper way to install a child seat, and what standards should be used?

To listen to the full interview with David, click on the 'Play' button below.