Driving to the mountains this weekend? ISP wants you to watch out. They’re targeting failure to pull over and improper passing on mountain highways, and will keep it up for the next several weeks. They’re reminding motorists that Idaho law requires that on two-lane highways outside urban areas, a vehicle going slower than the normal speed of traffic and holding up three other motorists must pull off at the next safe turnout to let folks pass. They’re also going after improper passing, in no-passing zones and when it’s not safe. “Our troopers will be working the mountain highways over the next several weeks with a particular focus on making sure motorists pull over when they need to, and others don’t pass when they shouldn’t,” said ISP Region 3 Commander Capt. Steve Richardson.