ALL:
We have Comcast and when we pause a tv show, a number of “slides” are on the screen. One is a rapid transit system with the two right tracks with red signals and the track to the left is governed by a green signal with an “M 30” in white letters. I assume that this means to proceed at a maximum speed of 30 MPH.
Ed Burns
Happily retired NP-BN-BNSF from Minneapolis.