The 64-mile, 3-foot gauge Cumbres and Toltec Scenic Railroad runs May-October, crosses NM/CO 2-lane Highway 17 at 4 places, also a forest road, US 285, various unprotected, private mountain ones.
The major crossings have only unlit sawbucks, no gates, pavement markings and round crossing warning signs along 17 and at 285.
Used to help flag them.
Gasoline tanker semis never stopped at the crossings, per federal law.
Luckily, never witnessed a serious incident., had a few close calls, though.