In a cycle having a bolt integrally secured to a cycle main frame or an engine
block of the cycle, the bolt projecting transversely from the cycle relative to
a vertical plane of symmetry, a novel cycle frame slider includes an elongate hollow
cylinder having an internal diameter, an outside diameter and an annular region,
the cylinder formed of a durable optically transmissible polymer, the cylinder
having a proximal end and a distal end, the proximal end of the cylinder proportioned
for securable engagement with the bolt, the cylinder having an axial length in
a range of about 10 to about 15 centimeters. The slider also includes a plurality
of light-emitting elements circumferentially secured within and about the proximal
end of the hollow cylinder, the light-emitting elements providing for control of
on-off cycling and blinking, the light-emitting elements in optical communicating
with the annular region of the cylinder. Electrical communication is effected between
the light-emitting elements and a directional signal circuit of the cycle.