Flags used at all Buckmore hire kart races

Drivers must understand and obey all flag signals. These will be explained during the safety briefing but to enable you to familiarise yourself prior to the event, the flags you are likely to encounter are:

Red flag
Race stopped. Cease racing immediately, put one hand in the air (if you are competent to do so) to indicate that you are slowing. Reduce speed to walking pace and proceed to the next manned marshal post. You will then be given further instructions. Do not brake hard upon seeing the red flag as this is likely to cause a further incident. A red flag is also shown on the slowing down lap at the end of a race to act as a reminder to stop as instructed.

Yellow flag
Great danger directly ahead. There is an incident past the marshal waving the flag (or showing the yellow light) . Cease racing. No overtaking. Raise a hand (if you are competent to do so) to indicate that you are slowing. You should slow to about three quarters of racing speed. Once past the incident you must check that the next manned marshal post is clear before resuming racing. Overtaking under a waved yellow, or failing to bring your kart under control, will result in an immediate penalty.

Black/white diagonal flag or board (shown with your kart number)
Driver warning. This flag or board is displayed at the start line and will be accompanied by your kart number. A smaller board may also accompany this, informing you of the reason for the warning (e.g. contact, kerbing etc.). You do not have to come in to the pits but you should note the reason for the warning and try to avoid repetition of the offence. Repetition may mean you are shown a penalty board and will then be penalised.

Black flag

You MUST return to the pits on the next lap. You will be met by a member of staff who will explain the reason for the flag. A black flag may be given for a number of reasons:
Repeated warnings.
Overtaking under a yellow flag.
Deliberate contact.
Dangerous driving.
Mechanical defect un-spotted by driver.
Not correctly dressed.

Always come in if you are given a black flag. It is often for your own safety.

Chequered flag

Race over. Cease racing. Fall in line behind pace kart in single file. In the absence of a pace kart, drive at half speed back to the grid.

NOTE: Lights may be used to supplement flags and these should be treated as if they were flags in every case.

Can be found here

I have never encountered anything comparable elsewhere!

Stefan, London, UK