Other changes announced Wednesday include a clarification of rules on chop blocks, or tackling below the knees, and implementation of a 40-second play clock that will start as soon as the ball is ruled dead. Previously, a 25-second clock began only on the referee's signal.
The NCAA also will emphasize consistency in officiating, including blending crews from different conferences.
Rogers Redding, NCAA football secretary-rules editor and co-ordinator of football officials for the Southeastern Conference, said the horse-collar ban may result in fewer back injuries.
"What we're hearing from trainers and physicians is we're getting some back injuries when the ball carrier is immediately snapped to the ground by being jerked quickly," he said. "If the ball carrier is grabbed byThe chop block will now be defined as any high-low combination block by any two players against an opponent other than the runner, anywhere on the field, anytime in the game and with or without a delay between the hits, Redding said.
the shoulder or jersey and just ridden to the ground over a couple of yards, that's not going to be a foul."
Football officials support the change, said Dave Parry, head of College Football Officiating and co-ordinator of officiating for the Big Ten.
"We'll err on the side of safety. We'll defend the official who may be a little more strict, because that's a major point of emphasis," Parry said.