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By law, what must the brakes on every vehicle (other than a motorcycle) consist of?

  1. not lock under any condition

  2. consist of a good foot brake and an "emergency" or "parking" brake

  3. consist of a good "parking" brake that is capable of stopping the vehicle within legal limits

  4. None of the above

The correct answer is: consist of a good foot brake and an "emergency" or "parking" brake

Every vehicle, with the exception of a motorcycle, is required by law to have a good foot brake and an additional "emergency" or "parking" brake. Option A is incorrect because the brakes must be able to lock in certain situations, such as when going down steep inclines. Option C is incorrect because it is not enough for the brakes to just be able to stop the vehicle within legal limits, they must also be a "good" brake. Option D is incorrect because, as stated previously, every vehicle must have two types of brakes by law.