It's actually too dark. Some routes IRL has lights along the track and certain locos (Like the American ones) are bright IRL. DTG makes headlights way too dark for the level of darkness of nighttime in the game. It's basically impossible to operate during the night in the game.
Confirm. It is impossible to play during the night time. Light seems to be just with details on the locos. Really too dark
I will say the headlights on North American trains is they don't light up the ground far ahead. They would shine near 1000 feet ahead for North American trains, UK trains don't shine far ahead or if at all because the track's fenced off.