of goals scored by each team as well as any penalties currently being served. Additional information such as shots on goal may be shown on smaller scoreboards located in the arena. Tenths of a second are usually displayed within the last minute of each period. In multipurpose arenas, the penalties being served will appear in the multi-purpose panels, used for player statistics in basketball, with shots on goal in the same position as team fouls for basketball. In some arenas the sideboards of the hockey rink feature three or four LED displays the size of one advertising hoarding which will show scoring information and promotional messages, though their limited visibility makes them rarely used. A horn or buzzer must be used to signal end of timeouts or period. In most games, the home team will either play a recording of or use a separate goal horn, usually an Airchime, Kahlenberg, or Buell when their team scores. These aren't required, but are rather used as a celebration, and they are often unique to their team and easily identifiable. A notable example would be the recording that the Boston Bruins play which is used by many other teams. Motorsports In auto racing, the scoreboard typically displays the running order of the race, and number of laps completed. Some more complex boards scroll statistics such as average speed, laps behind, and timing reports. Rugby football All codes of rugby football have a game clock, the number of tries, penalties, field goals and conversions listed. Track and field In track and field there is usually an elapsed time display. Sometimes the team scores are displayed. Often in higher levels there is a variable message display next to each field event area that displays the standings and who is up next. Other indicators may show track side wind speed. In some settings where a track surrounds an athletic field, a track and field scoreboard may be combined within the football scoreboards. Association football An association football scoreboard usually shows the score for the home and away team, as well as the current match time. A board displaying the current stoppage time is usually held up by one of the match officials towards the end of the first and second half. The same board is also used to denote the jersey numbers of players coming in and leaving the game during a substitution, with the substitute's