15. Bells and Gates

15.1 Bells

15.1.1  A bell is required for all warning systems, except for limited use warning systems referred to in Appendix B and for limited use warning systems with walk lights referred to in Appendix C.

15.1.2  Where there is only one sidewalk, path or trail along a road approach, the bell must be located on the signal mast adjacent to the sidewalk, path or trail.

15.1.3  A bell is required on a signal mast adjacent to a sidewalk, path or trail if separated from any other signal mast with a bell by more than 30 m (100 ft).

15.1.4  All bells must continue to operate for the same duration as the light units.

15.2 Gates

15.2.1  The gate arm must be installed perpendicular to the longitudinal axis of the road approach.

15.2.2  The descent of the gate arm must take 10 to 15 seconds and its ascent must take 6 to 12 seconds.

15.2.3  The gate arm must begin its decent once the gate arm clearance time has elapsed, calculated in accordance with article 10.4.

15.2.4  For a grade crossing where railway equipment enters the grade crossing at more than 25 km/h (15 mph), the gate arm must rest in the horizontal position not less than 5 seconds before the arrival at the crossing surface of railway equipment.

15.2.4.1  For a grade crossing where the railway equipment enters the grade crossing at 25 km/h (15 mph) or less, the gate arm must rest in the horizontal position when the railway equipment arrives at the crossing surface.

15.2.5  The gate arms must operate uniformly, smoothly, and complete all movements without rebound, and must be securely held when in the raised position.

15.2.6  If the gate arm strikes or fouls any object during its ascent or descent, it must readily stop and, on removal of an obstruction, assume the position corresponding with the control apparatus.

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