Because I had a cup of take out coffee.
Now I have made the same trip for months, drinking my coffee pretty much everyday.
But this time the driver decided to refuse to allow me on the bus citing health and safety.
Now despite the fact I accepted his reason, I did challenge why no other drivers do this and I see many people each week eating and drinking and worse still people playing music or games on their mobile device, the bus drivers never challenging this despite the rules.
I was annoyed, but complied. Then complained.