you are in a car and you can easily bump a motorcycle off its balance.
to tell the hospital when you are unconscious and bleedng to death. I had my blood type pasted on a permanent sticker on my motorcycle helmet just in case. Never needed it though.
but y one bottle blood, blood gp can be identified by lil amount of blood as well
Colleges, no. Institutions, yes. Basic stuff like road ethics should be taught very early on in schools. Secondary level is best in my opinion!