MILAN - FERRARI will revert to a 'lollipop' signal system for Sunday's Japanese Grand Prix after a traffic light method caused mayhem during a pit stop in Singapore.

'Right now we need to stay calm and therefore we've decided to go back to the old system,' team director Stefano Domenicali said in Tuesday's Gazzetta dello Sport.

At the Singapore GP, Felipe Massa's championship hopes took a hit when he was given a green light to drive off while the fuel rig was still attached to his car. The hose was yanked off its moorings and trailed Massa's car all the way to the end of the pit lane before he stopped.

Ferrari's light system usually works automatically when the fuel hose is removed from the car, but in Singapore it was in manual mode.

Under the 'lollipop' system, a team member holds a pole with a circular sign attached to the end - forming the shape of a lollipop - down in front of the car and flips it over to show 'Go' when the pit stop is finished.

With three races remaining, Massa trails McLaren's Lewis Hamilton by seven points. -- AP