Texas Transportation Code - TRANSP § 647.010. Required Stop at Railroad Crossing

(1) shall stop the motor vehicle not less than 15 feet or more than 50 feet from the nearest rail of the crossing; and

(2) may proceed only after the operator determines that the course is clear.

(1) a streetcar crossing that is in a municipal business or residential district;

(2) a railroad grade crossing at which a police officer or traffic-control signal other than a railroad flashing signal directs traffic to proceed; or

(3) a grade crossing that the proper state authority has clearly marked as being abandoned or exempted if the marking can be read from the operator's position.