The direct answer re: knowing you're on tribal/reservation lands is to do your homework and go over your routes, before going out.
The general thinking as far as having guns in your vehicles while passing through is that as long as you stay on state roads you should be ok. That's "should be." In other words, don't go sight-seeing- stay on the roads and keep moving. Stay at or under the speed limits.
In all the time I've spent on tribal lands and reservations, and I used to work with some of the Northern NM Tribal people, I have never seen any tribal police, let alone anyone pulled over by them. That doesn't mean they're not out there however.
The general thinking as far as having guns in your vehicles while passing through is that as long as you stay on state roads you should be ok. That's "should be." In other words, don't go sight-seeing- stay on the roads and keep moving. Stay at or under the speed limits.
In all the time I've spent on tribal lands and reservations, and I used to work with some of the Northern NM Tribal people, I have never seen any tribal police, let alone anyone pulled over by them. That doesn't mean they're not out there however.