So I think now I have all the stops, and all have a snow version. All the source files, as well as a pak-file for both experimental and standard are on github: https://github.com/Aquin13/Simutrans-truck-stops
And of course if you think they might suit pak128 or pak128german, feel free to include them there as well.
So please have a look at them in-game and tell me where I missed the odd pixel, or where you think that some texture needs a revamp.
@wlindley: I'm not quite sure what you want, if you wanted these stops to look like the "goods warehouse", that's not going to happen for several reasons:
1. the goods warehouse is quite boring as a stop, the truck vanishes in there.
2. there is not much variation possible.
3. put little warehouses next to the "road" part of the stop doesn't work as there is not enough space.
4. I like my stops as they are.
@james: no I think they knew how to operate a snowplow in the 1970'ies, so they have every right to clean their yard
the paks can be found on http://simutrans-germany.com/files/upload/truck-stops-pak128britain.zip