18.1 Grade crossing warning signals, gates, or cantilevered light units respectively shall have:

1. warning signals assemblies in accordance with Figure 18-1; 
2. gates in accordance with Figure 18-2; and 
3. cantilevers in accordance with Figure 18-3.

18.2 Grade crossing warning system instrument housings shall be located:

(a) no closer than 9 m (30 ft.) from the travelled way of the road, and no closer than 8 m (26 ft.) from the nearest rail, unless restricted by the width of the railway right of way, rock cuts, high fills, or water, in which case, they shall be placed as far from the nearest rail as conditions allow; and 

(b) on the side of the track to the outside of the curve where there is rail line curvature within the sightline limits, except that where topography such as rock or high fills or the width of the railway right of way prevents such a location, or interconnection of the grade crossing warning system with traffic signals, a Prepare to Stop at Railway Crossing Sign or other equipment of another railway company renders such a location impractical, the housing shall be located as close as possible to these limits. 

Figure 18-1: Warning Signal Assemblies

NOTES:

1. Minimum of 625 mm (2 ft) from the face of a curb; minimum of 625 mm (2 ft) from the outer edge of a shoulder and a minimum of 1.875 m (6ft) from the edge of the travelled way.

2. Additional light units on the warning signal may be required in accordance with sections 13 and 19. 

3. The Railway Crossing Sign must be clearly visible to all approaching drivers.

4. The top of the warning signal foundation shall be not more than 100 mm (4 inches) above the level of the surrounding ground. The slope away from the foundation of the surrounding ground towards the travelled portion of the road and the road shoulders shall not exceed the ratio of 4:1. 

Figure 18-2: Gates

NOTES:

1. Minimum of 625 mm (2 ft.) from the face of a curb; minimum of 625 mm (2 ft.) from the outer edge of a shoulder and a minimum of 1.875 m (6 ft.) from the edge of the travelled way. 

2. Gate arm reflective materials: 

1. Stripes shall be white and red and may be vertical or diagonal. 
2. Sheeting material specification: CGSB 62-GP-11M, Reflectivity Level 1, or better. Red stripes may be red sheeting or transparent red ink, silk screened processed over white sheeting; and 
3. Sheeting shall be replaced before the reflectivity falls below 50 per cent of the reflectivity value of Level 1 material specified in (b). 

3. Where gates are installed for grade crossings exclusively for pedestrians, cyclists, or both:

1. Each gate arm shall extend across the full width of the travelled way.
2. When the travelled way is less than 3.5 m (11.5 ft.) wide, two lights are required on each gate arm located so that the lights are over the two points dividing the travelled way into thirds. The two gate arm lights shall flash alternately.

Figure 18-3: Cantilevers

NOTE:

Cantilevered lights are required in accordance with section 13.