Comments by "Mikko Rantalainen" (@MikkoRantalainen) on "American Reacts to Finland Emergency Response Vehicles" video.

6:40 The construction sites use high-vis signals because Finland is pretty dark half the year so everything must be clearly visible in the darkness during the snow storm in the middle of winter and during heavy rain in the late autumn. The yellow stuff is made out of highly reflective tape.
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If you drive in Finland during the winter, you definitely want Michelin, Continental or Nokian tires because the friction will be pretty low no matter how good your tires are, so any bit of extra traction is a huge bonus. I prefer studded variants but you can use the variant without studs if you really want.
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Retired emergency vehicles are sold to public. The colors are typically just plastic tape and the underlying vehicle is typically pure white.
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I think most emergency vehicles in Finland have 3 different siren sounds and they select different depending on the situation. I think one is used near intersections and one is for the highways. However, there are no standardized sounds so every emergency vehicle sounds a bit different. I think about 40 years ago it was typical that all ambulances had one sound and firetrucks another but there are no such themes nowadays. As for the color scheme of ambulances and firetrucks: they typically use reflector tape (all the white/grey looking stuff is reflector material which reflects maybe 80–90% of the incoming light directly back. Nowadays ambulances are mostly yellow and firetrucks are mostly orange. Police cars are always mostly white with dark blue/nearly black thick stripes. All emergency vehicles use blue signal lights and any blue lights in civilian vehicles are strictly forbidden (blinking or static). The blue lights are always used if the emergency vehicles do not follow the usual traffic rules but the siren is used by the decision of the driver only. If it's deemed unnecessary for safety, they will switch it off not to cause extra noise.
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