The ice hockey rink must be maintained to ensure quality control. Keeping the ice smooth is necessary to prevent damage to the ice and player injury. Between every period during the intermission, a vehicle called the zamboni will drive along the ice smoothing it out.
The zamboni is vehicle operated by a driver who drives it along the ice resurfacing the playing surface. Simultaneously shaving the top layer of the ice, removing cracks, and smoothing out the ice with water, the zamboni is a machine that maintains the rink at lightning speeds.