The tracks wind through the hills here so different angles can be had. There are places to pull off the road but be careful near the underpass as the road is narrow. Continuing on this road will bring you trackside again on the other side of the hill. There are places to pull off if you see something coming. The line generally runs NE to SW along here.
Visibility is better for spotting westbound rather than eastbound trains.
The NIS operates the former U.P. Fibreboard spur, to service the Pabco Gypsum Board plant. UP - Utah Rwy. Train frequency in Las Vegas can be VERY unpredictable. Obviously this is a very arid environment, so it's a good idea to bring plenty of water along. If you have any further questions, feel free to email me.