| 2019 | ||
|---|---|---|
| Letter No. | Date | Subject |
| 2012/Sig/TLBI | 22.05.2019 | Handle Type Token less Block Instruments – Requested of Policy revision for procurement directly from RDSO approved vendors instead of through Signal Workshop/HWH/ER |
| 2017/Sig/WP/RE works | 18.12.2019 | Approval for use Podanur type TLBI with UFSBI in 25KV RE area on D&E rout in Signal Line section. |
| 2018 | ||
| 2017/Sig/WP/RE Works | 31.10.2018 | Replacement of Podnaur type Tokenless Block Instruments with Handle Type Tokenless Block (Diado) Instruments on Single Line Section for 25 KV RE Fitness. |
| 2017 | ||
| 2012/Sig/TLBI | 16.10.2017 | Removal of existing Single Line Token Block Instrument over Chhinwawara- Parasia section of Central Railway. |
| 2007 | ||
| 2005/Safety (A&R)/19/16. | 16.10.2007 | Failure of Block Instruments and introduction of Paper Line Clear Ticket. |
| 2006 | ||
| 2005/ Safet(A&R)/19/16 | 29.03.2006 | Failure of Block Instruments and introduction of Paper Line Clear Ticket. |
| Source : Ministry of Railways (Railway Board) CMS Team Last Reviewed on: 03-03-2023 | ||