The circuit officials will decide whether the ongoing conditions are compliant with the IRL safety standards and will redirect all cars to the pit lane. In the IRL, the red flag means the race or practice/qualifying session is immediately stopped due to unsafe conditions. Red FlagHere's another flag that has the same meaning in almost every racing series worldwide. When the marshals signal a furled yellow flag, it means the caution period is about to end in the upcoming lap. Once they've rejoined the field, overtaking becomes unacceptable. When trying to reach their team's pit stand or when leaving for the track, they are allowed to pass one another. Once the yellow flag is waved, most of the competitors will hit the pits for refuel and tire change. That doesn't always apply to the pit road. When the IRL visits an oval track – meaning most of the times – the yellow flag is joined by yellow lights.Īs mentioned before, overtaking is strictly prohibited, unless we're talking about wrecked cars. Also, no overtaking is allowed during the period of time the yellow flag is waved by the race marshals. That means he is required to slow down immediately and be prepared to drive behind the safety car. Yellow FlagLike in many other racing series, the yellow flag signals some hazardous conditions ahead of the driver who sees it. If a white flag is waved by a race official on a road course, it means the cars will have to slow down because there's an official car on the circuit. The white flag is usually waved from the starter's point on oval tracks. It basically means that the leader of the race has entered the last lap and has to hold on to the lead for a few more hundreds of meters. White FlagIt's the next best thing for an Indy Racing League leading driver, after the chequered flag. What that means is that the car can begin racing at full speed and regardless of what happens in front/rear of the field. The green flag signals the start of the race, qualifying session, practice session or a re-start after the race was previously interrupted.

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