Abstract: A mountain board having a leg-actuated safety brake mechanism and a leg-actuated brake mechanism. The brake mechanism includes a displaceable pad or cup attached to the top region of a post attached to, and extending from, the mountain board. The safety brake mechanism includes a safety brake lever, or push rod, nested in the displaceable pad. The safety brake mechanism and the brake mechanism can be coupled to the same brake for seizing wheel rotors The safety brake mechanism is disengaged upon a rider pushing the push rod. The brake mechanism is functional only upon the safety brake having been disengaged. A steering mechanism including resilient members interconnecting the wheels to their respective yokes provides improved carving capabilities. Chamber-less tires with open cavities provide puncture-proof feature.