if u have TCAS, just select the mode XNDR or ALTOFF NOT TA/RA.
It is especially important during low vis weather,so controller can track your progress.TARA only when entering runway in use.It is nerve recking to see alt reporting of an aircraft taxiing on // taxiway when you are taking off in low vis conditions.
If it is not written on your Jepps, you dont need to do it unless of course your SOPS require you to.
Captstd
