vehicle's respective emergency service, improve visual identification, and differentiate emergency vehicles from regular traffic. Each service's design choices reflect different needs, but typically include: Identification of the service – Text or logos identifying the emergency service to which the vehicle belongs, and its purpose to the public and other services. Occasionally, the name of the service ("police", "ambulance", etc.) may be written in reverse lettering on the front of the vehicle; this lettering is reflected properly in rear-view mirrors. Vehicle ID number – A fleet number or unit number, typically printed on the roof, trunk, or fender of the emergency vehicle, allowing for easy internal identification and fleet maintenance. High visibility markings – A design or paint scheme that makes the emergency vehicle distinct or highly visible, and thus easily identifiable as an emergency vehicle from a distance. These can be as simple as unique paint schemes (such as black and white for police, or bright red for fire) or stripes, or as complex as Battenburg markings or intricate images evoking the jurisdiction they serve. Police are usually partially exempt from this, and they may be able to use unmarked police cars that lack any markings whatsoever, thus resembling civilian traffic. Contact information – Appropriate contact information for the emergency service operating the emergency vehicle, or appropriate methods to request their assistance. The most common contact information printed on an emergency vehicle is an emergency telephone number, usually a national uniform number, but also a service's respective dedicated emergency number if they have one. The service's phone number or website link may also be used, though these are generally less emphasized so as to not confuse people who may be unfamiliar with a jurisdiction's emergency contact methods. See also Automotive safety ISO 9001 certification ISO 14001 certification Emergency management Safety car Vehicle recovery References External links