A Dunleavy administration proposal to allow off-road vehicles on Alaska’s roads is raising safety and enforcement questions in the state’s more populous areas even as its origins remain hazy. Right now, state law only allows off-road vehicles to cross roads. The proposed policy would change existing regulations to allow four-wheelers, snowmachines and “all-purpose vehicles” on roadways with limits of 45 mph or less — a broad category that includes some of th...