If you’re looking for resources in Dying Light The Beast than there is no better location than a military convoy. These are abandoned gold mines of legendary weapons and resources in the game. You can find convoys all over Castor Woods in the form of trucks, armored vehicles, and train cars.
In pretty much every convoy you find valuable resources and a lot of ammo for your weapons. However, you’ll need to find keycards each time you find a convoy location. In total there are 9 convoys in Dying Light The Beast.
Convoy Location #1: Ruined Highway Convoy – Northwest Industrial Zone

The first military convoy can be found in the Industrial Zone. More specifically, you can find it in the northwestern corner of the Industrial Zone. Inside there are weapons and armor as well as some throwables.
Convoy Location #2: Industrial Bridge Convoy – Southwest Industrial Zone

Stay in the Industrial Zone and this time head over to the Southwest part. You can find a convoy near Cement Gardens factory area. Just like other convoys, a keycard is needed to get in. Find a Bitter wearing military gear near the convoy and take him out. Loot the body for the card.
Convoy Location #3: Power Plant Convoy – Recreation Island

The third military Convoy is on the Recreation Island. It is right before the bridge and on the other side of the river from the Municipal Library. It is also near the Power Plant in Recreation Island.
Convoy Location #4: City Bridge Convoy – North Old Town

There is a bridge near the Municipal Library which is the bridge of North Old Town. It has a huge military convoy on it but also a ton of zombies that you have to deal with. However, there is a ton of loot in this entire section of the map.
Convoy Location #5: Town Hall Convoy – Center Old Town

This one is right next to the Town Hall and very easy to find. While this is a small convoy it still has good loot. As always, find the keycard to access it.
Convoy Location #6: Island Tunnel Convoy – Mental Asylum

This convoy is near the St. Valentine Asylum inside a tunnel. A lot of zombies in the area but the loot is great. The best way to deal with them is to bait them to come out one by one.
Convoy Location #7: Mountain Path Convoy – East National Park

Go to the mountain road east of the Nature Reserve in Dying Light The Beast. The location is marked on the map you see above. This is a huge convoy so the there are a ton of zombies protecting it. Be prepared for a fight when you get here.
Convoy Location #8: Farmlands Convoy – Southwest Farmlands

Head over to The Vale, specifically Southwest of the Farmlands. There is a convoy just off the road here. It is a small one so not many enemies to deal with. Easy loot!
Convoy Location #9: Mountain Tunnel Convoy – Northeast Villa Area

This convoy is on the same road as the last one but on the opposite side. It is a large convoy so expect a big fight here.
These were all the locations for now but if I find more I will update the guide.