The penalty for illegal kicking or batting is 5 yards.

The signal for free kick infractions, other that encroachment of the neutral zone is Signal 18.

The ball becomes dead and the down is ended when a prosthetic limb comes completely off the runner.

No player or nonplayer shall trip an opponent.

The horse-collar foul is enforced as a live-ball foul.

During a kick, an offensive player may use his hands or arms to ward off an opponent who is attempting to block him.

Game officials may use supplementary equipment to aid in game administration as authorized by the state association.

An artificial arm may not be worn by any player.

When R1 gains possession of a free kick, blocking below the waist by teammates is legal.

It is recommended that the restraining line be marked by placing 12-inch-long lines, separated at 24-inch intervals.

A down ends when the live ball becomes dead.

A tinted eye shield is illegal.

When weather conditions are construed to be hazardous to life or limb of the participants, the crew of game officials is authorized to delay or suspend the game.

A signal given by R1 in or behind the neutral zone during a scrimmage kick is an illegal fair-catch signal.

If R1 signals for a fair catch, he may not block until the kick ends.

If K1's field-goal attempt deflects of K2's shoulder while he is in the expanded neutral zone, no goal is scored even if the ball passes between the uprights and above the crossbar.

A backward pass out of bounds is an illegal pass.

If a player refuses to comply with a game official's directive, the player will be disqualified.

3rd & 8 from the A-30. A10 completes a pass to A88 who then runs out of bounds at the A-40. When does the game clock start? Play clock starts at 40 or 25?