This character is a Other Symbol and is commonly used, that is, in no specific script.
The glyph is not a composition. Its East Asian Width is wide. In bidirectional text it acts as Other Neutral. When changing direction it is not mirrored. U+1F6F4 offers a line break opportunity at its position, except in some numeric contexts.
The CLDR project calls this character “kick scooter” for use in screen reading software. It assigns these additional labels, e.g. for search in emoji pickers: kick, scooter.
This character is designated as an emoji. It will be rendered as colorful emoji on conforming platforms. To reduce it to a monochrome character, you can combine it with Variation Selector-15: 🛴︎ See the Emojipedia for more details on this character’s emoji properties.
The Wikipedia has the following information about this codepoint:
A kick scooter (also referred to as a push-scooter orscooter) is a human-powered street vehicle with a handlebar, deck, and wheels propelled by a rider pushing off the ground with their leg. Today the most common scooters are made of aluminum, titanium, and steel. Some kick scooters made for younger children have 3 to 4 wheels (but most common ones have 2 wheels) and are made of plastic and do not fold. High-performance kickbikes are also made. A company that had once made the Razor Scooters revitalized the design in the mid-nineties and early two-thousands. Three-wheel models where the frame forks into two decks are known as Y scooters or trikkes.
Motorized scooters, historically powered by internal combustion engines, and more recently electric motors, are self-propelled kick scooters capable of speeds sometimes exceeding 30 km/h (19 mph).