If tripling+ quadrupling is done then also only tripling to be updated. Quadrupling is to be updated only when triple lines are commissioned. There is no option to update tripling+ quadrupling as of now.
It will be updated together. Khapri Nagpur tripling+quadrupling is almost completed, anytime CRS will happen. If possible, I will visit khapri outer to show the progress . Please refer SECR N CR railfan YouTube channel
As per site guidelines Im saying. Updating quadrupling means third line is commissioned. Once both are completed together then update quadrupling ines directly.
Important Note:This website NEVER solicits for Money or Donations. Please beware of anyone requesting/demanding money on behalf of IRI. Thanks. Disclaimer: This website has NO affiliation with the Government-run site of Indian Railways. This site does NOT claim 100% accuracy of fast-changing Rail Information. YOU are responsible for independently confirming the validity of information through other sources.