A key aspect of preventing runway excursions is providing runways of sufficient length and width to accommodate the aircraft used at an airport. In the 1960s, the advent of jet airliners such as the Boeing 707, which operate at faster speeds including at takeoff and landing relative to earlier propeller-driven airliners, required longer runways. In the mid-1960s, the Federal Aviation Administration (FAA) proposed increasing minimum runway length requirements by 800 feet (240 m) at all U.S. airports with jet airliner service, extending to 1,200 feet (370 m) feet in rain or snow conditions.