Just did a long night drive from 3 AM to 7 AM in total darkness and no moon. Some heavy fog and some Ice Fog. Luckily, I made it without any incident.
The things that are critical we all know. Clean headlights, clear windshield, decent wipers, good defroster (in winter), washing fluid, and COFFEE to keep you awake.
Luckily, my car has headlamp squirters that engage when you have the headlights on and you hit the windshield washers. My wipers are new and I cleaned the inside of the windshield with Windex the night before. Sometimes you get a film on the inside that you can't see during daylight but it comes out and haunts you at night. My car also has HID (High Intensity Discharge) Xenon headlamps so it's very good at night even with low beams. I did run the FOG lamps this trip as I needed them in parts of the drive.
Did not see any Deer this trip. Usually in the wee hours of the night when morning is approaching, you can spot deer near the highway. Not this time.
I am not a fan of HID Xenon lamps coming toward you. But I have to say, if you have a car with them and do a lot of night driving, they are great. You don't feel the need (or at least I don't feel the need) to engage high beams with Xenon lamps. But... they are EXPENSIVE to replace. I had a scare last year when one failed and the quote for a new one shocked me. But... it suddenly started working again and has been working ever since. Crossing my fingers and my wallet.