Originally Posted by
2 sheds
Not so much dogma as, in the case of the UK, the CAA never reproducing in the UK MATS the ICAO departure/arrival runway separations (applicable unless "reduced separation in the vicinity..." applies) - and then bringing them up to date for a radar/ATM environment. Historically, one reason may be that they are expressed so clumsily.
2 s
Is that the "landing aircraft will not be permitted to cross the runway threshold until the departing aircraft has crossed the end of the runway" bit?