O-licence applicants must sign a declaration confirming they will comply with certain obligations to be given an O-licence and must continue to maintain standards to keep an O-licence once they have it.These include being a fit person to hold a licence; making proper maintenance arrangements for vehicles; controlling drivers’ hours, records and loading; running a suitable depot (known as the operating centre); having adequate financial resources and, for standard national and international licences, possessing the necessary professional competence qualifications.