I recently traveled by train in the UK. I went to the station and bought a return ticket from Bristol to Oxford. The machine presented a huge number of options but in the end I chose a super off peak return as I was coming back the next day out of what I thought were peak times.
When I attempted to come back at 9:40 am I found that my ticket wasn't valid until 10:30am. I checked my ticket and there was nothing written on it about when it was valid and no times were shown on the machine I bought it from either.
How on earth can you tell which ticket you should have at what time of day?