On Tue, Nov 30, 2021 at 05:48:28PM -0500, Shane Ronan wrote: > Please provide details on public transit systems that are controlled via > Wifi, I find that very interesting. > He's talking about CBTC running on 2.4Ghz band for DCS. And yes he is right, numerous metro subway systems use this. For heavy rail deployments, ETCS Level 2 uses GSM-R. James