New York Laws
Article 9 - Equipment of Motor Vehicles and Motorcycles
382-B - Service Brake System.

§ 382-b. Service brake system. Every motor vehicle of a passenger car
or station wagon type, registered in this state and manufactured or
assembled after June thirtieth, nineteen hundred sixty-seven, and
designated as a nineteen hundred sixty-eight or later model, shall be
equipped with a service brake system of such design that rupture or
failure of an actuating force component of any single brake shall not
result in complete loss of braking function. The braking function may
be obtained by hydraulic or other means through the normal service brake
mechanism.

"Actuating force component" as used in this section shall mean the
brake master cylinder, brake actuating cylinder, brake line, brake hose,
or similar components performing like functions if the brake systems are
other than hydraulic.

In the event of rupture or failure of an actuating force component,
the unaffected brakes shall be capable of applying an adequate braking
force to the vehicle.