For my part I will always try to thank the train crew where I can. There was a time at Nottingham where i got off the train and was heading towards the exit and as I passed the cab I said "Thank you driver", the driver looked at me with a look of mild suprise and said "no problem", it was the look of suprise that made me think that he was rarely thanked for his efforts. I have also tried to instill these basic manners in my children, where possable I will say to them as we pass the cab, "What do we say to the Driver?". Also my son is a big Thomas fan and once had a conversation with a 153, well he thought he was actually the driver ducked down in the cab and voiced the 153, which I though was really great of him to do.
I have had one experience of a delayed traincrew at Lincoln where an announcement was made that the rostered driver was unavailable and they were making every effort to find a driver that knew the route, to which one passenger piped up "its easy follow the F**king track", he calmed down a little when it was explained to him that it was a bit more complicated than that.
It seems that passengers can be less than sympathetic towards railway workers, which I can imagine would be quite irritating for them, but for my own part I try to be patient, after all TOC's don't delay trains for fun there is always a reason for it.
I have my parents to thank for my manners as these were instilled in me from a young age I always find that a little politeness goes a long way, and I would like to think that a Driver or Guard or other member of staff would have thier day made that little bit better knowing that at leats some people appreciate thier efforts. Staff rarely get the credit they deserve if there was an applause button on this forum I would click it in honour of the staff that do thier best to get us where we want to go on time. *Applauds*