sentences:  When it was introduced, its primary aim was to ""provide passengers with certainty about what travel their ticket buys them" ", after many years of ambiguity over 'reasonable' journeys, therefore passengers are now quite within their rights to use it as a point of reference, since it has been written and approved by the transport companies.The primary concern of those travelling is staying on a route acceptable for the ticket they have purchased.The customer is always on-route if they can answer yes to at least one of the below, according to section A of the guide