Title: Firefighting apparatus
Content:  Due to the need for firefighting apparatus to be highly visible, they are, similar to other emergency vehicles, painted in conspicuous colors, such as white, yellow, orange, or red most frequently and famously, fire engine red. While red remains the most common color for firefighting apparatus, it is not required and depends highly on individual needs, traditions, and safety research. For example, the Chicago Fire Department has a long-standing tradition of painting their apparatus black over red, a practice that has caught on far beyond Illinois. Neighboring departments will also often use different colors to distinguish their apparatus. For example, the Santa Barbara Fire Department uses the traditional fire engine red while the neighboring Santa Barbara County Fire Department elects to use white with blue stripe. Some, like the Denver Fire Department use less common colors like all-over white with 
Title: Fire engine red
Content:  Fire engine red is an informal name for an intense, bright red commonly used on emergency vehicles in many countries on fire service vehicles. There is no unique shade, although different fire services may have a required specification. The color has long been used, although not by all fire vehicles.
Title: Fire engine
Content:  the attention of other drivers as the fire truck approaches, or to provide warning to drivers approaching a parked fire truck in a dangerous position on the road. While the fire truck is headed towards the scene, the lights are always accompanied by loud audible warnings such as sirens and air horns. Some fire engines in the United States are lime yellow rather than red due to safety and ergonomics reasons. A 2009 study by the U.S. Fire Administration concluded that fluorescent colors, including yellow-green and orange, are easiest to spot in daylight. In some regions, a fire engine may be used to transport first responder firefighters, paramedics or EMTs to medical emergencies due to their proximity to the incident.
Title: Shades of red
Content:  Fire engine red is an intense, bright red commonly used on emergency vehicles; mostly on fire engines, other associated fire service vehicles, and ambulances.
Title: Chartreuse (color)
Content:  Since about 1973, a sort of fluorescent chartreuse green has been adopted as the color of fire engines in parts of the United States and elsewhere. The use of chartreuse fire engines began when New York ophthalmologist Stephen Solomon produced research claiming that sparkling bright lime-green paint would boost the night time visibility of emergency vehicles compared to those painted the traditional fire engine red. The reason for this is the Purkinje effect, i.e., the cones do not function as efficiently in dim light, so red objects appear to be black. In Australia and New Zealand this form of chartreuse yellow is also known as "ACT yellow" as this is the color of the fire engines in the Australian Capital Territory.
Title: Fire engine red
Content:  Traditional fire departments in large U.S. central cities and major metropolitan areas use this color on fire engines, but many suburbs and smaller cities use the color lime or bright yellow for their fire engines because of its greater visibility at night. In the U.K. the fire service added the more visible Battenburg markings in fire-engine red and retro-reflective yellow, often on a predominantly red vehicle. Initial research into fire appliance visibility was conducted by the Lanchester College of Technology and the Fire Brigade in Coventry, in the UK in c. 1965. It concluded that under the range of artificial street lighting in 
Title: Bundeswehr-Feuerwehr
Content:  The various types of fire engines usually have red livery (RAL 3000) since the late 1990s. Special vehicles include airport crash tenders, Brush Trucks and rescue trucks for the evacuation of pilots.
Title: Emergency vehicle lighting
Content:   Fire and emergency medical services generally use red lights with amber and white as optional colors. Vehicles operated by fire departments, such as fire engines and heavy rescue vehicles, prominently use red, a color with strong cultural associations with the fire service, along with some amber and white. Some more modern fire trucks and airport crash units use a yellow-green color, however. Many fire chiefs’ cars have, in addition to the red lights, a single green beacon to indicate command post status. On the other hand, in Chicago and some nearby communities, fire vehicles show a green light on the right, or starboard, side of the 
Title: Fire services in York Region
Content:  Spartan Gladiator / Smeal 100' platform quint ; 961 - 2014 Spartan Metro Star / Smeal pumper ; 971 - 2014 Spartan Metro Star / Smeal pumper ; 981 - 2015 Spartan Metro Star / Smeal pumper ; 991 - 2012 Spartan Metro Star / Smeal pumper  York Region's fire apparatus use fire engine red as the base colour. Trim varies from yellow, white and blue. Markham and Vaughan were one of a number of municipalities to have formerly used a yellow paint scheme. APPARATUS DESIGNATIONS - The numbering works like this: The apparatus numbers are pronounced by saying each 
Title: Firefighting apparatus
Content:  gold in Denver's case. Most fire apparatus use retroreflective markings to increase their visibility in poor light; red and white or red and yellow chevrons on the rear are almost universal, and while most choose a more modest and arguably stylish option in simply making existing stripe patters reflective, some, particularly European fire services and especially those in the United Kingdom and in the Netherlands, choose to have very large and prominent markings. Others still, such as the Munich Fire Department have replaced red with similar but more visible colors, such as fluorescent orange. A study by the American Psychological Association published in February 2014 indicated that lime-yellow is a significantly safer color for emergency vehicles because of its increased visibility. The study showed that lime-yellow fire apparatus were half as likely to be involved in accidents as red vehicles.

Question: What color is fire engine?
Answer: red.
red color.