One thing I’ve noticed about modern diesels (C-44-9W’s, SD-80’s, etc . . .) is that all the cabs seem to be equipped with tinted windows. I’m sure this provides some additional comfort for crews from glare and/or heat from the sun. The same reasons folks have tinted windows on their cars. But I wonder what negative impact these windows might have in two different respects.
First, is it possible that tinted windows might affect crew safety? There have been incidents in the past of vandals throwing rocks (or worse) at trains as they pass. Certainly, some of these types don’t care who or what they hurt. But there are others who might refrain if they are aware that there are human beings in the locomotive - humans who might be injured by their actions, or at least who might turn them in to the authorities. On the other hand, maybe crews feel safer behind the tinted glass?
The second area is in terms of public relations. For over a century and a half, a friendly wave between bystanders and the crew of a passing train has exemplified the public face of railroading. Generations of kids have grown up wanting to be just like the engineer who waved back, or even better, gave them a friendly toot on the whistle or horn. Nowadays, when I encourage my kids to wave at the engineer, how can they know if he is waving back from behind the tinted glass? And perhaps annoyed motorists at a grade crossing will stop to realize that the crew is just doing their job and trying to clear the crossing as soon as they can, if they can see them in the cab?
I think the railroads would recognize some real (but difficult to measure) benefits from replacing the tinted glass with clear. But, I’m not on the front lines, so I would be interested to see some input from train crews who can say how they feel about these issues.