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LEVEL CROSSINGS
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The number and colour of the bells may be varied
| Lowest hot weather height of contact wires | Height of gauge (diagram 781) and height to be shown on supplementary plate (diagrams 780A, 780.1A and 780.2A) for different overhead line voltages | Signs to be used | ||||
|---|---|---|---|---|---|---|
| 25000 volts | Less than 25000 volts | |||||
| Imperial | Metric | Imperial | Metric | Imperial | Metric | |
| 18-9" | 5.71 m | 16'-9" | 5.1 m | 17'-3" | 5.2 m | Diagram 779 with 780A or 780.1A |
| 18-6" | 5.64m | 16'-6" | 5.0m | 17'-0" | 5.1 m | |
| 18'-3" | 5.56m | – | – | 16'-9" | 5.1 m | |
| 18'-0" | 5.49m | – | – | 16'-6" | 5.0m | |
| 18'-3" | 5.56m | 16'-6" | 5.0m | - | - | Load gauge (diagram 781) and diagram 779 with 780.2A |
| 18'-0" | 5.49m | 16'-3" | 4.9m | - | - | |
| 17'-9" | 5.41 m | 16'-0" | 4.8m | 16'-6" | 5.0m | |
| 17'-6" | 5.33m | 15'-9" | 4.8m | 16'-3" | 4.9m | |
| 17'-3" | 5.26m | 15'-6" | 4.7m | 16'-0" | 4.8m | |
| 17'-0" | 5.18m | 15'-3" | 4.6m | 15'-9" | 4.8m | |
| 16'-9" | 5.10m | 15'-0" | 4.5m | 15'-6" | 4.7m | |
| 16'-6" | 5.03m | 14'-9" | 4.5m | 15'-3" | 4.6m | |
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