In most car brake systems, what carries the push from the brake pedal to the wheels?

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  1. A steel cable
  2. Compressed air
  3. Brake fluid in sealed lines

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References

  1. OpenStax College Physics 2e, Pascal's Principle openstax.org/books/college-physics-2e/pages/11-5-pascals-principle Checked 2026-10-12.
  2. NHTSA Interpretation nht75-3.50 www.nhtsa.gov/interpretations/nht75-350 Checked 2026-10-12.

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