According to the
2019 log:
AH1 uses NH19 and NH44 from Agra to New Delhi (and Jallandhar).
AH2 uses NH9 through Ghaziabad to New Delhi?
AH42 uses NH31 and NH20 via Bakhtiyarpur.
AH43 uses NH44 thru Hyderabad.
AH43 continues past Rameswaram to Dhanushkodi.
AH47 uses NH48 into Bengaluru (but is Google correct about the bypass we have being NH48?)
AH48 does not exist as we have it west of NH717_S. Instead it follows NH717 from Bangladesh.