The important role of motorsport's marshals has been highlighted by the death of Canadian Mark Robinson as Esteban Gutierrez's Sauber was removed from the track after the 2013 Canadian Grand Prix.
Shaun Botterill/Getty Images
Rain or shine volunteers —
There will be close to 1200 volunteers on duty at the British Grand Prix. At the 2012 race they were on hand to help deal with the wet weather at Silverstone.
F1's flag bearers —
Some of the marshals communicate messages from race control to the Formula One drivers. Here a red flag, shown at the Monaco Grand Prix, means the track session has been stopped.
JEAN CHRISTOPHE MAGNENET/AFP/Getty Images
Expert movers —
The marshals are on hand to remove debris from track -- and push cars away to safety. Here they help Pastor Maldonado after his Williams comes to a halt in Monaco.
Track marshalls remove the car of William's Venezuelan driver Pastor Maldonado during the Monaco Formula One Grand Prix at the Circuit de Monaco in Monte Carlo on May 26, 2013. (Photo credit should read JEAN CHRISTOPHE MAGNENET/AFP/Getty Images)
Emergency service —
The marshals are also first on the scene when the drivers crash. They are trained in how to support a driver's neck before the medical team arrive. They they were on hand at Felipe Massa's heavy crash at Hungary in 2009.
Paul Gilham/Getty Image
Part of the show —
F1's global marshals are as integral to the sport as the drivers. Here some of the Indian Grand Prix marshals meet Red Bull racer Mark Webber in 2012.