Like running, it can take place on a track or as a road race. The main competitions take place at the Summer Paralympics which wheelchair racing and athletics has been a part of since 1960. Competitors compete in specialized wheelchairs which allow the athletes to reach speeds of 30 km/h or more.
Hue is one of the main properties (called color appearance parameters) of a color, defined technically (in the CIECAM02 model), as the degree to which a stimulus can be described as similar to or different from stimuli that are described as red, green, blue, and yellow  (the unique hues).
adjective. 1  a. 2  Exhibiting or characterized by rapid, rhythmic movement back and forth or to and fro; vibrating. 3  Produced as a result of vibration; resonant or resounding: vibrant voices. 4  Relatively high on the scale of brightness: a vibrant hue.