The torch is actually really good for night time as it does not attract zombies. Seriously you can shine it right in their face and they just dont give a poo. But it is a big "WOO LOOK AT ME IM OVER HERE" to other players on the server. You can see that thing quite a ways off. I use night vision mostly these days. The only problem is it doesnt work with my AS50 anymore
but if you have a DMR it works with that. If I dont have night vision I mostly stay out of forests and stick my brightness/gamma up. But not to max as that mucks things up more. If you dont have the higher tier weapons then you should be okay to wonder around cities at night without caring much if you die from players. Besides its pretty fun to get into a night city firefight
... just dont use a shotgun. I made that mistake once. Wont make it again.