Utah Code § 41-6a-1205: Railroad grade crossings -- Certain vehicles must stop -- Exceptions -- Rules.

(1) An operator of a commercial motor vehicle, as defined under Section 53-3-102, shall upon approaching a railroad grade crossing:

(a) except as provided in Subsection (2), slow down and check that the tracks are clear of an approaching railroad train or other on-track equipment;

(b) stop within 50 feet, but not closer than 15 feet, from the nearest rail of the railroad track before reaching the crossing if the tracks are not clear;

(c) obey all traffic control devices or the directions of a peace officer, or other crossing official at the crossing; and

(d) before proceeding over a railroad grade crossing:

(i) ensure that the vehicle has sufficient space to drive completely through a railroad grade crossing without stopping; and

(ii) ensure that the vehicle has sufficient undercarriage clearance to safely and completely pass through the crossing.

(2) Except as provided in Subsection (3), the operator of a vehicle described in 49 CFR 392.10:

(a) shall stop within 50 feet, but not closer than 15 feet, from the nearest rail of the railroad track before crossing, at grade, any track of a railroad;

(b) while stopped, shall:

(i) look in both directions along the railroad track for:

(A) a sign of an approaching railroad train or other on-track equipment; or

(B) a signal indicating the approach of a railroad train or other on-track equipment; and

(ii) listen for a signal indicating the approach of a railroad train or other on-track equipment;

(c) may proceed across the railroad track only when reasonably safe to cross; and

(d) after stopping and safely proceeding, may not manually shift gears while crossing the railroad track.

(3) This section does not apply at a:

(a) railroad grade crossing where traffic is controlled by a peace officer or other crossing official;

(b) railroad grade crossing where traffic is regulated by a traffic-control signal;

(c) railroad grade crossing where a traffic-control device gives notice that the stopping requirements of this section are not applicable; or

(d) other railroad grade crossings excluded under 49 CFR 392.10.

(4) A violation of this section is an infraction.