Pathfinding on Instantiated AI Vehicles

Hi, I was wondering if there's anyway that a certain type of vehicle can go to a specific path ? For example , I have this traffic system with me. I have car types divided such as a private vehicle and a public vehicle(fare paid vehicles;such as jeepneys,taxis ,etc.). I also have a network of path on my road networks just like what we are seeing in a real life environment. I want only jeepneys to be able to access the bridge I made and prohibit those private vehicles , is there anyway to achieve this? I really need help, thanks. I'm using c#