In the world of motorsports, competition rules are called regulations. Although there are many sports in the world, the regulations of motorsports is very complicated. Almost every year, the regulations are revised. Also, if the categories are different, other regulations may apply.

So, if we could learn correct knowledge about motorsports regulations, we thought that we could watch motorsports more interestingly and fun and launched this website.






Racing Flags

In motorsports, flags are waved at the observation post on the side of the track to notify drivers of danger or to give instructions from race control.

The observation post locations and flag locations are determined at each circuit and have been approved by the FIA or ASN. Therefore, it is impossible to change the location where the flag is waving without permission.

There are many different types of racing flags waved on the circuit. The regulations are different for automobiles and motorcycles. Therefore, it explains the operation rules of the flag clearly.



All Racing Flags

Red Flag

Yellow Flag

Oil Flag

Blue Flag

White Flag

Green Flag

Black and
White Flag

Black Flag with
Orange Disc

Black Flag

Checkered Flag

National Flag


The flags displayed at the observation post are basically waved. However, the flag that is displayed in combination with the yellow flag with red stripes and the car number board will not be waved (stationary).


Red Flag

Red flag means the suspension of the session. Red flag is waved at all observation posts when sudden changes in weather, such as heavy rain, or when a serious accident occurs when race control determines that continuing to drive is dangerous or difficult. The session is suspended.


Yellow Flag

Yellow flag is waved at the observation post just before the scene when there is a danger on the course. At the same time, the green flag is waved at the following observation post, and the section from the yellow flag to the green flag becomes the yellow flag zone and overtaking is prohibited.


Oil flag

Oil flag informs the driver that there is oil on the track and the course is slippery. It is also displayed when the track becomes slippery due to rain, or when there is gravel or falling object on the track. The display is performed stationary.


Blue Flag

Blue flag is waved when a fast vehicle is approaching from behind. During the race it is waved for the driver to be lap down.


White Flag

White flag inform the driver that there is a very slow car ahead. It is also waved when a marshal car is on the track.


Green Flag

Green flag means course clear. It is waved as a set with a yellow flag. It is waved at the following  observation post of the scene that caused the yellow flag.


Black and White Flag

Black and white flag is displayed with the car number board at the observation post near the control line for driver who have acted against the sportsman spirit.


Black flag with orange disc

Black flag with an orange disc 40 cm in diameter is displayed with the car number board for vehicles with mechanical troubles such as damaged parts or leaking oil. These are called orange ball flag and orange disc flag. It is basically displayed at the observation post near the control line.


Black Flag

Black flag means disqualification. It is displayed at the observation post near the control line.


Chequered Flag

Chequered flag means the end of the session. It is only waved at the observation post near the control line.


National Flag

The start of the race is usually signaled to the driver by turning on and off the start signal. However, the race can be started with national flag.



Safety Car

There is a dangerous situation on the track, but it is not necessary to suspend the race, Safety car is deployed.

Virtual safety car (VSC) is operated in Formula One, and Full Course Yellow (FCY) is operated in WEC. It explains the safety car deployment and restart procedure and violation in SC.





Virtual Safety Car (VSC)


Full Course Yellow (FCY)