Old chestnut - digi card use at a truck rally

Any ideas on whether I need a digicard in to drive to a truck rally. The boss is quite happy for truck to go and I am not being paid.

I am sure that has been covered many times before but I can’t find it!!!

Maigret:
Any ideas on whether I need a digicard in to drive to a truck rally. The boss is quite happy for truck to go and I am not being paid.

I am sure that has been covered many times before but I can’t find it!!!

If it’s over 7.5t yes.

As it’s unlikely to be over 25 years old if fitted with a Digi