I was driving in my vehicle in the town of Dubrovka being chased by a small horde of infected. I just drove over a bridge and the game crashed.
This is a private LAN server with just me playing. The only mods I have installed are the Realistic Weapons and Suppressor mods.
I'm not sure if it's related, but I do notice that at least once per play period I get disconnected from the server. The little red "chain" icon pops up and I am booted off the server.
I have to log back in.