Original sentence: Passenger vehicles typically have either a front/rear split brake system or a diagonal split brake system.The master cylinder is divided internally into two sections, each of which pressurizes a separate hydraulic circuit
Edited sentence: In a four-wheel car, the master cylinder is divided internally into two sections, each of which pressurizes a separate hydraulic circuit.Passenger vehicles typically have either a front/rear split brake system or a diagonal split brake system (the master cylinder in a motorcycle or scooter may only pressurize a single unit, which will be the front brake)