first, let me apologize for writing in English on this forum. My German is terrible.
I am an Italian biker and in July I will be travelling with friends to the Grossglocker glacier. We are really looking forward to that and we are trying to make sure we comply with all the required regulations (I know... even Italians are not what they used to be).
Reading tourist information websites, it seems that there are several mandatory items to carry on a motorbike, but the info are somewhat confusing and contradict each other. That is why I thought to ask to this forum.
For now, it seems established that we will need:
-an emergency medical kit
-a high visibility vest
Some websites also claim that the emergency triangle is mandatory for motorbikes.
So my questions are:
-is the triangle mandatory?
-what is the minimum requirement for the med kit? Can we have one to share or each one need its own?
Many thanks in advance for your replies. Any suggestion would be

Regards,
Paolo