| 1. | An interlocking system was installed at the station on 22 January 1971.
|
| 2. | The interlocking system is also being changed to panel or route relay interlocking.
|
| 3. | A complete interlocking system became operational from 28 August 1938.
|
| 4. | An incomplete interlocking system was operational from 1 November 1903.
|
| 5. | As part of this a new, fail-proof interlocking system became operational in December 1926.
|
| 6. | A simplified interlocking system was installed on 1 January 1901.
|
| 7. | An interlocking system was installed and had to be guarded 24 hours a day.
|
| 8. | Wilson declared that science is an interlocking system of fields.
|
| 9. | An interlocking system was installed on 30 May 1959.
|
| 10. | Since the late 1980s, new interlocking systems have tended to be of the electronic variety.
|
मोबाइल