Special police usually describes a police force or unit within a police force whose duties and responsibilities are significantly different from other forces in the same country or from other police in the same force, although there is no consistent international definition. A special constable, in most cases, is not a member of a special police forces (SPF); in countries in the Commonwealth of Nations and often elsewhere, a special constable is a voluntary or part-time member of a national or local police force or a person involved in law enforcement who is not a police officer but has some of the powers of a police officer. Australia Australian police forces have a unit which carries out high risk jobs. They use heavier fire power and better vehicles. They go by different names: Special Tasks and Rescue group, Security Response Section and Special Operations Group. Canada "Special police" is not a term used in Canada, but specialized police agencies exist in Alberta, British Columbia, Nova Scotia, and Ontario. In Alberta, special police forces can be maintained by transit authorities and universities and are usually referred to as protective services. Protective services are staffed by unarmed community peace officers who have law enforcement powers but cannot enforce criminal legislation. In British Columbia, any provincially-approved entity or First Nation can establish a designated policing unit (DPU) to supplement "the policing and law enforcement otherwise provided by the provincial police force or a municipal police department." Although officers of a DPU are armed police officers with the same authority as any other municipal police officer, designated policing units must comply with stricter regulations compared to municipal police services and are led by a Chief Officer, who has less authority over their staff than an ordinary police chief. As of 2022, there are three designated policing units in the province: the Metro Vancouver Transit Police, which provides police services to TransLink, the regional transit provider in the Vancouver metropolitan area; the Organized Crime Agency of British Columbia, which is responsible for investigating and prosecuting organized crime rings; and the Stlʼatlʼimx Tribal Police Service, which serves ten St'at'imc communities in the northern end of the Squamish-Lillooet Regional District. There is one special police force in Nova Scotia, the Halifax-Dartmouth Bridge Commission Bridge Patrol. The Patrol is composed of special constables with limited police authority to enforce traffic violations on or near Bridge Commission property. In