Keeping it simply just the way it has it in the manga.
The Flame Road is similar to the Wing Road in that both Wind and Fire are said to be "free". There are several principles to the Flame Road:
■The first is the generation of heat via friction. This can bend light, create updrafts, and create illusions using heat mirages. This ability to create heat is especially useful against the Rising Road; a sufficiently skilled Flame Road rider can nullify all but the strongest Rising Road techniques with their flames.
■The second is the use of fast and precise attacks to freeze the movement of their victims. These tricks are collectively referred to as "Time".
Flames are the "template" for each and every run.
The Flame Regalia uses all four wheels, with the back wheels decorated with a Kitsune. When activated, the wheels run to produce torrents of flames. Flame Regalia has a cyberairspace called Lon Houtz Bourne Street that is linked to every A-Ts memory data. This enables the Flame King to tap into the tricks of other riders using the activated Flame Regalia, but at a cost if the Rider isn’t trained to handle that much power. If the Rider pushes the move when his not ready, the move can end up killing or permanently injuring the rider.