Strobe lights have many different types of uses in our modern world. They can be used to increase light and visibility for outdoor jobs. This might include anything from the construction site for filming movies. Other use of more general and recognizable is at the bar and nightclub and of course we all see it while stuck in traffic at night due to road repairs.
Suppliers provide a variety of easily transportable strobe lights besides the permanent type or variety and these range from the small emergency strobe lights that consumers have in their cars and boats to much larger scale versions used by companies and government bodies. You can check out the more information about strobe light at https://www.hypop.com.au/collections/strobe-lights.
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Then of course there are types used by emergency vehicles and police cars. The type of lights installed on the roof is designed to make emergency vehicles very visible so we can see them even if they are behind us because high intensity flash will even attract our attention in the rearview mirror even if we don't see direct them.
They actually produce flashes similar to those used in the photography industry and usually xenon flash lights. These lights produce very bright flashes for a very short time. It is achieved by turning on the Xenon gas inside the lights, which produce bright light and when this is done repeatedly in a short time we get the familiar strobe strobe of the police.