(9 hours ago)F114TML wrote Most of the buses don't have them (audible). Exceptions (at Sunderland) are 28014, the Yutongs and the hazards on the 19300 and 19400 series buses. Not sure if they're still audible on the ex-Manchester MMCs at Walkergate.

Most likely drivers complaining about it, it was a major complaint when the Yutongs first came in but it's been quietened down (some drivers would rather them be silent).

Have they?, they still sound quite loud.

There was a old person the other day, was talking to the driver and the she was so amazed that the wing mirrors are cameras and they were in the cab.