 And as of January 2013, a green and blue "TAXI" sticker is required on the front doors.In September 2006 a nationwide taxi fare system was introduced so that charges no longer depend on the county or city council area.The term "hackney" is used in Ireland to refer to a service which can only carry passengers from a pre-booked destination (or the hackney company's office) to another destination, similar to a minicab in Britain.