Amend the Highway Code to incorporate Horse Riders'/handlers' hand signals

Horse Riders are taught an extended arm moving up and down as a request for vehicle drivers to slow down. Section 215 of the Highway Code clearly states 'Look out for horse riders’ and horse drivers’ signals and heed a request to slow down or stop'. Yet the Highway code does not show what this signal is, and to confuse matters has explained elsewhere, in a photograph of a motorcyclist, that it means the horse rider is slowing down. Consistency is needed in the Highway Code and we believe the current advice could cause dangerous confusion.