Letter No.	Date	Subject
2014/Sig/TPWS/160 kmph/Pt./loose	30.03.2021	Raising speed to 160 kmph on new Delhi-Mumbai central route.
2020/Sig/UW/TCAS (CR, SWR, WCR)	04.03.2021	Approval of works sanctioned under Umbrella works of CR, SCR, SER, SWR & WCR of pink book 2020-21 under plan Head 33
2021/Sig/25-Conf/5/SSC	26.02.2021	Special signal standards committee (SSC)’s meeting for EI.
2020/Sig/nomination Gurgaon, Haryana	26.02.2021	Letter of Acceptance for executive of Signalling works .
2020/Sig/nomination Saket, New Delhi	26.02.2021	Letter of Acceptance for executive of Signalling works .
2020/Sig/nomination East Kidwai Nagar, New Delhi	26.02.2021	Letter of Acceptance for executive of Signalling works.
2014/Sig/ATP/IR	19.02.2021	Committee for interoperability of features between TCAS & ETCS Level-2
2019/Sig/17/36/ETCS L-2	19.02.2021	Associate membership of EULYNX by RDSO.
2010/Sig/SGF/12/Data Logger/1	18.02.2021	Linking of Data Logger with COA at major terminals for reporting train arrival/departure timings.
2014/Sig/ATP/IR	18.02.2021	Approved scheme for TCAS & Automatic Signalling.
RDSO-SIGOSDAC (CEL)/1/2020	02.02.2021	Mitigation of NCR issue in CEL makes MSDAC.
2013/Sig. Vig/01 (Part)	21.01.2021	System Improvement in works contract for commissioning of Electronic Interlocking (EI) system.
2020/Sig/CBTC	19.01.2020	Execution of work of CBTC on Mumbai suburban section by MRVC setting up of a Core group.
2013/Sig/TCAS/status	18.01.2021	EPC Tender for provision of TCAS in new Delhi –Mumbai, New Delhi- Howrah sections and other sections of IR.
2020/Sig/ph-29/Zonal Exe. Auth.	14.01.2021	Change in nodal authority for plan Head 2900 (Road Safety Works Level Crossings) at Zonal Railways.
2020/Sig/12-SFTYMTR/1/CCRS/CRS	11.01.2021	Restrictions imposed by CRS/WC/CCG in replacements works.