Where are Drum Brake Systems typically found?

Drum brake systems are typically found on the rear brakes of many vehicles, especially in the context of standard braking systems. This configuration allows manufacturers to utilize cost-effective solutions, as drum brakes can be less expensive to produce than disc brakes.

The design of drum brakes is suited for rear installations because they provide effective braking force and also facilitate parking brake systems in many traditional setups. Additionally, while drum brakes can be used in conjunction with disc brakes on the front wheels, the primary characteristic of drum brakes is their widespread use on the rear, making this option the most accurate answer regarding where they are commonly found.

The other choices imply exclusivity to specific vehicle types or drive systems, which doesn't accurately represent how drum brakes are employed across a range of vehicles. This broader application highlights why the rear brake designation is the most relevant and correct answer.