Well thanks for the advice. I base most of what I say on my personal experience. Living around and working with railways has been part of my family's life for about 75 years, as a profession. The first time I was in a cab of a real working loco, working in a real yard, was when I was about five years old. So where's your expertise....? Well thanks again for you advice, although there is no need for you start making personal comments and become extremely offensive. As it happens, I have taken literally thousands of photos of trains, including at night. Um , for about forty years..... The whole issue for me about lights, and the discussion around them, particularly with respect to Cathcart, is the trend to hyper-generalise. I fully well know that British locos had filament bulbs in the 1970s (and some still have them today). I might have changed a few myself.... ;-) And yes, these lights can be seen by other people. And no, they don't light up 1000 yards of track ahead for the driver in all conditions. I don't expect them to, in TSW. But yes - they do light up signs in the cess and various bits of lineside furniture over a short radius, which the driver can see. And that is all that I want to see in TSW - which is what you get in TS2012. For clarity: I don't want British locos from the 1970s to be modelled with 1000 yards of track lit up ahead. I am not asking for high intensity lights, even though this is apparently modelled on the Class 314 (but without the light source). Just a gentle light - like with the DB BR 155, which enables you to see signs and get a feeling of movement at night. It's not complicated. It really isn't complicated. It's one of those things that really lacks any real level of complexity, because it isn't complicated. It doesn't need to be made complicated. It's an issue that is quite happy being left in the "easy to understand" category.