hmmm
I thoght the 175's would have had Door controls for the gaurd from some of the passenger doors like on 158's , Mersyrail 507/8's and Arriva Trains Wales 150's and i think the 170's have these controls as well.
Would make sense if the MAnufratures added these as Standard but if you Look in the cab of say a 142 unit you can see were the Door Buttons have been taken away.
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