A refuse collection vehicle having a packer system, a hopper, and a storage compartment. A wall between the storage compartment and the hopper defines an opening that allows refuse to pass from the hopper to the storage compartment. The packer system includes an auger screw and a driver. The driver rotates the auger screw such that refuse is packed into the storage compartment through the opening. A door can be positioned to cover the opening in the wall to inhibit refuse from passing back through the opening. A door actuator system moves the door to selectively open and close the door on the opening. A packing actuator can push an ejector panel across the floor of the storage compartment while the door is closed on the opening in the wall to further compact refuse in the storage compartment or to eject refuse from the vehicle.

A container assembly includes a container, a collection arm assembly, a locking mechanism, and a controller. The container has a front wall, a rear wall, a first sidewall, and a second sidewall cooperatively defining an internal cavity. The collection arm assembly is slidably coupled to the container such that the collection arm assembly is selectively extendable laterally outward from the container. The collection arm assembly includes a retaining pocket. The locking mechanism includes a latch and an actuator. The latch is positioned to selectively engage with the retaining pocket of the collection arm assembly. The actuator is positioned to selectively reconfigure the latch between an unlocked position and a locked position. The controller is configured to engage the actuator to selectively reconfigure the latch into the locked position and thereby prevent the collection arm assembly from extending laterally outward from the container.