On Mar 31, 10:59 pm, G wrote:
I've seen RA indicators at Manchester Victoria, where there are no
single manned trains. Are they serving the same purpose?

And, while I'm in obvious (but not to me) question mode, above the
signals are larger ones that occasionally display U B in two boxes.
Why?

According to the 1998 resignalling notice, there is no route
indication "UB" at Manchester Victoria. The indications used there
a

"UF" - Up Rochdale Fast
"DS" - Down Rochdale Slow

"UB" is used on a shunting signal at Philips Park South Junction to
denote "Up Baguley".

--------------------------------------------------------------------
Railway Signs and Signals of Great Britain: http://
www.railsigns.co.uk/
Mileposts: http://www.railsigns.co.uk/other/milepost1/milepost1.html