Text Version of Images

Figure 3-1 a) Crossing Surface

Two plan views of a crossing surface, one without shoulders and one with shoulders, with arrows and dimensions illustrating section 3.1 The dimensions illustrated between the Crossing Surface width and the Travelled Way width are 0.5 m (18 in).

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Figure 3-1 b) Crossing Surface

Two plan views of a crossing surface, one without shoulders and one with shoulders, with arrows and dimensions illustrating section 3.1 The dimensions illustrated between the Crossing Surface width and the Travelled Way width are 0.5 m (18 in).

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Figure 4-1 – Railway Crossing Sign and Number of Tracks Sign

4-1 a) Railway Crossing Sign

Diagram 4-1 (a), uses lines and arrows to illustrate the dimensions and angle of a Railway Crossing sign.

The blades of the Railway Crossing Sign shall be 45 degrees from the centre line of the sign.  90 degrees shall separate each blade.  Each blade is white and has a red perimeter that is 50 mm in thickness.  Each blade is 200 mm high and 1220 mm wide. From the center of the width of each blade no red shall appear for 50 mm to each side of the center line.

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4-1 b) Number of Tracks Sign

Diagram 4-1 (b), uses arrows to illustrate the dimensions of the Number of Tracks sign.

The Number of Tracks Sign shall have a picture of railway tracks with the number of tracks identified right above. Each tie, of the railway tracks image, is 32 mm wide and there shall be a gap of 93 mm between each tie. The bottom part of the sign is 690 mm wide minimum and 200 mm high minimum. The railway tracks image shall be centered on the sign and the tracks shall be 13 mm thick and the distance between the tracks shall be 76 mm. The top part of the sign consists of a rectangle that is 200 mm wide and between 200 and 229 mm high and is centered with the lateral axis of the bottom portion of the sign. The font of the number shall be Helvetica Medium at 152.5 mm high.

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Figure 4-2 – Location of Railway Crossing Signs and Number of Tracks Signs (public grade crossings without warning systems)

Figure 4-2 has four diagrams. The first three diagrams illustrate the location of the signs on roads of different configuration (angle greater than 90˚, angle 90˚ or less and multi-lane one-way or divided road.) the last diagram shows how Railway Crossing sign and the Number of tracks sign should be placed on the post.

4-2 a)

For crossings where the angle between the railway tracks and the roadway is greater than 90 degrees, the intersection between the perpendicular line from the Railway Crossing Sign and the longitudinal axis of the roadway shall be positioned at a minimum of 3 m from the nearest rail. 

For crossings where the angle between the railway tracks and the roadway is less than 90 degrees, the Railway Crossing Sign shall be positioned at a minimum of 3 m from the nearest rail.

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4-2 b)

As provided for under article 4.1.1 (f) a sidewalk, path or trail with its centreline more than 3.6 m (12 ft.) from a railway crossing sign supporting post beside a road approach for vehicle traffic must have separate railway crossing signs.

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4-2 c) Railway Crossing sign

The Railway Crossing Sign shows that the lowest edge of the blades shall be between 1.5 and 2.5 m from the crown of the road.  The Number of Tracks Sign is shown just below the Railway Crossing Sign and the upper edge of the Number of Tracks Sign is in line with the tangent of the lower edges of the Railway Crossing Sign.  The center of the Railway Crossing Sign is 0.5 m above the top of the Number of Tracks Sign.

The Railway Crossing Sign shall be positioned perpendicular to the longitudinal axis of the roadway.

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Figure 4-3 – Railway Crossing Sign and Number of Tracks Sign on a Grade Crossing Warning Signal of Flashing Light Type

Grade crossing warning system of flashing light type assembly and the placement of the number of tracks sign.

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Figure 4-4 – Railway Crossing Sign and Number of Tracks Sign where Gates at a Grade Crossing

Warning system assembly with gates and the placement of the number of tracks sign.

The gate arm has 3 flashing lights positioned just above the gate arm.

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Figure 5-1 – Grade Crossing Surface Dimensions

5-1 a) Road, including a path or trail

Plan view of a crossing surface with a road, path or trail. Dimensions and arrows show the components

The grade crossing surface shall extend 0.5 m or more beyond the shoulder, when there is one, or 0.5 m beyond the travelled surface when there is no shoulder.

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5-1 b) Sidewalk, path, or trail along a road

Plan view of a crossing surface with sidewalk, path or trail along a road. Dimensions and arrows show the components

The crossing surface shall extend 0.5 m or more beyond the sidewalk; or beyond the shoulder, where there is one.  Crossing surface of a sidewalk, path or trail along a road may be separate from the road crossing surface if there is 1.0 m or more between the two crossing surfaces.  Otherwise, crossing surface must be continuous.

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Figure 7-1 – Minimum Sightlines – Grade Crossings

7-1 a) Sightlines for Users Stopped at a Grade Crossing (applicable to all quadrants)

Dimensions and arrows illustrate the clear sightline area along the railway right of way, location of the railway crossing sign and D stopped

The road edge of the sightline triangle is obtained by the distance from a point at the road driver's position to the nearest rail, a distance of 5 m (16.4 ft )

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7-1 b) Sightlines for Users Approaching a Grade Crossing (applicable to all quadrants)  

Dimensions and arrows illustrate the clear sightline area, SSD and D SSD

The road edge of the sightline triangle consists of the distance obtained by adding the SSD with the distance from a point on the longitudinal axis of the roadway, which is 5 m (16.4 ft) perpendicular to the nearest rail..

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Figure 8-1 – Railway Crossing Sign and Number of Tracks Sign

8-1 a) Railway Crossing Sign

Diagram 8-1 (a), uses lines and arrows to illustrate the dimensions and angle of a Railway Crossing sign.

The blades of the Railway Crossing Sign shall be 45 degrees from the centre line of the sign.  90 degrees shall separate each blade.  Each blade is white and has a red perimeter that is 50 mm in thickness.  Each blade is 200 mm high and 1220 mm wide.  From the center of the width of each blade no red shall appear for 50 mm to each side of the center line.

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8-1 b) Number of Tracks Sign

Diagram 8-1 (b), uses arrows to illustrate the dimensions of the Number of Tracks sign.

The Number of Tracks Sign shall have a picture of railway tracks with the number of tracks identified right above.  Each tie, of the railway tracks image, is 32 mm wide and there shall be a gap of 93 mm between each tie.  The bottom part of the sign is 690 mm wide minimum and 200 mm high minimum.  The railway tracks image shall be centered on the sign and the tracks shall be 13 mm thick and the distance between the tracks shall be 76 mm.  The top part of the sign consists of a rectangle that is 200 mm wide and between 200 and 229 mm high and is centered with the lateral axis of the bottom portion of the sign.  The font of the number shall be Helvetica Medium at 152.5 mm high.

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Figure 8-2 – Retroreflective Stripes on the Back of the Railway Crossing Sign and on the Sign Supporting Post (public grade crossings without a grade crossing warning system)

Figure 8-2 is a back view and a front view of a railway crossing sign and sign supporting post with lines and arrows to illustrate the dimensions and placement of the retroreflective stripes.

The retroreflective stripes on the back of the railway crossing sign blades is 100 mm wide and is centered laterally and applied along the longitudinal axis of the blades.  

A retroreflective stripe is applied to the back and the front of the mast of the railway crossing sign and is 50 mm wide and is centered laterally and applied along the longitudinal axis of the mast.  It extends to a point which is 300 mm maximum from the crown of the road and to a point which is 70 mm past the intersection of the railway crossing sign blades.

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Figure 8-3 – Location of Railway Crossing Signs and Number of Tracks Signs (public grade crossings without warning systems)

Figure 8-3 has four diagrams. The first three diagrams illustrate the location of the signs on roads of different configuration (angle greater than 90˚, angle 90˚ or less and multi-lane one-way or divided road.) the last diagram shows how Railway Crossing sign and the Number of tracks sign should be placed on the post.

8-3 a)

As provided for under article 8.1.7 (f) a sidewalk, path or trail with its centreline more than 3.6 m (12 ft.) from a railway crossing sign supporting post beside a road approach for vehicle traffic must have separate railway crossing signs.

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8-3 b)

For crossings where the angle between the railway tracks and the roadway is greater than 90 degrees, the intersection between the perpendicular line from the Railway Crossing Sign and the longitudinal axis of the roadway shall be positioned at a minimum of 3 m from the nearest rail.

For crossings where the angle between the railway tracks and the roadway is less than 90 degrees, the Railway Crossing Sign shall be positioned at a minimum of 3 m from the nearest rail.

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8-3 c) Railway Crossing sign

The Railway Crossing Sign shows that the lowest edge of the blades shall be between 1.5 and 2.5 m from the crown of the road.  The Number of Tracks Sign is shown just below the Railway Crossing Sign and the upper edge of the Number of Tracks Sign is in line with the tangent of the lower edges of the Railway Crossing Sign.  The center of the Railway Crossing Sign is 0.5 m above the top of the Number of Tracks Sign.

The Railway Crossing Sign shall be positioned perpendicular to the longitudinal axis of the roadway.

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Figure 8-4 – Stop Signs

A diagram showing the placement of railway crossing sign, stop sign and number of tracks sign on the post.

The bottom edge of the stop sign is located at a minimum of 1.8 m from the crown of the road in urban areas and 1.5 m in rural areas. 

The intersection of the railway crossing sign blades is located at a maximum of 3.0 m from the crown of the road.  An exception is shown for cases where a stop sign of 1.2 m is used.  In this case, the maximum for the height of the intersection of the railway crossing sign blades is 3.5 m from the crown of the road.

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Figure 9-1 – Proximity of Warning Systems to Stop Signs and Traffic Signals

9-1 a) Intersection with Stop Sign

Plan view of a grade crossing using dimensions and arrows to illustrate the proximity of grade crossing warning systems to stop signs at a T-intersection or crossroad.

The distance between a stop position of a lead vehicle and the nearest rail is provided for in article 9.1.

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9-1 b) Intersection with Traffic Signal

Plan view of a grade crossing using dimensions and arrows to illustrate the proximity of gradecrossing warning systems to traffic signals stop signs at a T-intersection or crossroad.

The distance between a stop line of a lead vehicle and the nearest rail is provided for in article 9.2.

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Figure 10-1 – Clearance Distance (cd) for Grade Crossings

Figure 10-1 has two diagrams with measurements and arrows illustrating the location of a signal or sign, clearance point, clearance distance, centerline of road, and direction of travel on a grade crossing.

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10-1 a) For Grade Crossings with a Warning System or Railway Crossing Sign

The clearance point is the closest point on the departing lane of a grade crossing that is 2.4 m from the nearest rail measured perpendicular to the rail. The departure point of the clearance distance measurement is 2.0 m before the signal or sign.

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10-1 b) For Grade Crossings without a Warning System or Railway Crossing Sign

The clearance point is the closest point on the departing lane of a grade crossing that is 2.4 m from the nearest rail measured perpendicular to the rail. The departure point of the clearance distance measurement is 2.0 m before the signal or sign. If there's no sign or signal, the starting point is at 5.0 m measured perpendicular from the nearest rail.

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Figure 10-2 Assumed Acceleration Curves

In the graph, the acceleration time is plotted against the distance travelled during vehicle acceleration. Illustrated are the acceleration curves for; long load logging truck which shows an acceleration time of approximately 10 seconds to 20 seconds and travels a distance of approximately 15 meters to 67 meters, tractor trailers and long combination vehicles which shows an acceleration time of approximately 7 seconds to 18 seconds and travels a distance of approximately 14 meters to 90 meters, single units trucks which shows an acceleration time of approximately 6 second to 13 second and travels a distance of approximately 14 meter to 57 meter and passenger vehicles  which shows an acceleration time of approximately 4 second to 9 second and travels a distance of approximately 12 meter to 57 meter, based on the distance travelled during acceleration (meter) and the acceleration time (seconds)

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Figure 11-1 – Restrictions on the Proximity of Intersections and Entranceways to Public Grade Crossings

Figure 11-1 has four diagrams. Each diagram illustrates the "D" distance restriction for the proximity of intersections and entranceways to public grade crossings.

11-1-1 Diagram 1)

As provided for in article 11.1 a public grade crossing must be constructed so that no part of the travelled way of an intersecting road is closer than 30 m to the nearest rail of the grade crossing.

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11-1-2 Diagram 2)

As provided for in article 11.1 a public grade crossing must be constructed so that no part of the travelled way of an entranceway (other than a railway service road), or the stop line or position of a traffic control device is closer than 30 m to the nearest rail of the grade crossing.

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Figure 12-1 – Warning Signal Assemblies

Lines and arrows are used to illustrate the dimensions of a warning signal assembly and the placement of the number of tracks sign.

The lowest edge of the light units, of the Warning Signal Assemblies, is to be located between 2.3 m and 2.9 m from the crown of the road.  The outside radius of the light units is 305 mm. Each flashing light unit shall be located on each side of the mast and their center shall be at 380 mm from the center line of the mast.

The distance between the lowest edge of the railway crossing sign and the outer edge of the light unit is between 125 and 175 mm.

The distance between the top of the assembly foundation and the surrounding ground level is 100 mm.

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Figure 12-2 – Gates

Lines and arrows are used to illustrate the dimensions of a warning signal assembly with gates and the placement of the number of tracks sign.

The gate arm is between 1.1 and 1.4 m above the crown of the road.  The gate arm gearbox extends no more than 650 mm from the center of the mast.  The gate arm at its fully deployed position is 11.6 m from the center of the mast.

The gate arm shall have 3 flashing lights positioned just above the gate arm and shall be equally spaced along the arm.  The first light shall be located between 355 and 915 mm from the end of the gate arm.  The distance between the first and last light shall be 2.74 m minimum. 

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Figure 12-3 – Cantilevers

Lines and arrows are used to illustrate the dimensions of a warning signal assembly with lights mounted on cantilevers.

The outer edge of the cantilevered flashing light units is between 5.2 and 6.0 m from the crown of the road.

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Figure 13-1 – Warning Signal Offsets Requiring Cantilevered Light Units

13-1 a) Two Way Road

Plan view of a grade crossing with dimensions and arrows to illustrate warning signal offset for a two-lane road.

In a two-way road configuration, Dr is the distance between the center of the warning signal mast and the centerline of the roadway.

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13-1 b) One-Way or Divided Road

Figure (b) has two diagrams of plan views of a grade crossing with dimensions and arrows to illustrate warning signal offset on a road. Diagram 1 is for a one way and diagram 2 is for a divided road approach.

In a one-way road configuration, DR is the distance between the center of the warning signal mast and the outer edge of the roadway on the opposite side of the warning system.

In a divided road configuration, DR is the distance take to the right of the plan view of the roadway, between the center of the warning signal mast and the centerline of the roadway. DL is the distance take to the left of the plan view of the roadway, between the center of the warning signal mast and the centerline of the roadway.

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Figure 13-2 – Sidewalks, Paths and Trails

13-2 a) Two Way

A plan view of a grade crossing with dimensions and arrows illustrates the proximity of a sidewalk, path or trail and the location of light units.

As provided for in article 13.5.1, a sidewalk, path or trail with a centre line more than 3.6 m from a warning signal mast beside the travelled way of a road approach for vehicles must have separate light units

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13-2 b) One-Way

Figure (b) has 2 diagrams of plan views of a grade crossing that illustrate the proximity of sidewalks and the location of light units. Diagram 1 is for a one-lane road with one sidewalk and diagram 2 is for a two-lane road with sidewalks on both sides.

As provided for in 13.5.2, a set of back lights must be provided for persons travelling in the direction opposite to vehicle traffic where there is a sidewalk, paths or trail along one-way road approach.

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Figure C-1 – Limited Use Warning System with Walk Light Assembly

Front view the assembly of a limited use warning system with Walk Light with dimensions

The bottom edge of the walk light is between 2.3 and 2.8 m from the crown of the road.

The distance between the top of the assembly foundation and the surrounding ground level is 100 mm maximum.

The bottom edge of the stop sign is at a minimum 1.4 m from the crown of the road.

Distance between top edge of stop sign and bottom walk light anchor is 203 mm.

Distance between the bottom edge of the stop sign and the upper edge of the "cross tracks only when both signals are illuminated" sign is between 125 and 175 mm. 

Distance between the bottom edge of the "cross tracks only when both signals are illuminated" sign and the upper edge of the Number of Tracks sign is between 125 and 175 mm

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Figure C-2 – Instruction Sign

An example and dimensions of an Instruction Sign which is a rectangular-shaped sign that reads "Cross tracks only when both signals are illuminated."

The height of the sign is 560 mm and the width is 610 mm and the font size of the text is 25 mm.

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Figure D-1 – Prescribed area for whistling cessation as per article 23.1 of the RSA

An overhead view of a grade crossing illustrating the prescribed area for whistling cessation as per article 23.1 of the Railway Safety Act.

As provided for in section 99(1)(i) of the regulations the area within the railway right-of-way, is on each side of the public grade crossing, and within 0.4 km from the outer edge of the crossing surface.

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