The traditional sequence is not scientifically verified but has more authenticity than any other event sequence. The first and foremost reason for the widely adopted sequence is the enhanced safety it offers, which has more of a logical hypothesis.
I have been in the sport for a good while now, yet, I still find myself falling into some newbies pitfalls every now and then.
Race identification is an essential practice that aids officials in their jobs and encourages faster response in case of medical emergencies and potentially other uses.
One of the most effective ways is LUBRICATION. Vaseline is an inexpensive remedy for lubricating chafed skin areas. The lubricant keeps the skin from rubbing against each other allowing the skin to glide easily against each other.
There are provisions for portable toilets or porta-potties in any triathlon race to relieve yourself on race day (source). They are usually located 12-15 miles apart on a bike course and 1-1.5 miles apart on a run course. However, the best advice for any athlete is to visit the bathroom before the race.
A triathlon license is a permit granted by the national authority. This license guarantees that all the events organized by the national authority are managed under the policies, terms, and conditions set by event organizers. Most importantly, it offers participants insurance to make the experience safe and enjoyable.