Am I unreasonable not letting my 15 year old make regular trips alone to Bristol?

[Judgejudyandexecutioner]

Am I being unreasonable saying no to my 15 year old boy making trips by himself from Swindon to Bristol?

The trip entails a train journey then a 2 mile walk to a bus stop then a bus across Bristol. He would be doing this journey carrying an electric guitar and pedal case and the journey back would be staring early evening.

I keep thinking what if. What if the bus doesn’t come and he is stranded? He is very obviously carrying an expensive guitar.

Just wanted a feel for it is just me being an over protective mum or would others feel the same?

I would have met mine do this at 15.

‘Let’

It sounds like the two mile walk is maybe the simplest option, but there will be buses.
Ignore the transport assistance for you, I would be far more worried about you being stranded without assistance.
I assume the guitar is insured?
Can you book an Uber for the two miles?
But if that is too much I would post the journey here and see if anyone can suggest a better route by public transport.
But I would let him go. I am disabled and the truth is you have to let your kids be more independent if you are a disabled parent so they don't miss out. But if the guitar is not insured I would add it to my home insurance policy.