The form of way marking for cyclists is only generally defined in Technical Conditions 100 "Principles for traffic signs of orientation on roads”.
Although new Technical Conditions are currently being prepared with an interim title Technical Conditions 108 "Principles for cycle routes and way marking for cyclists", the general description in TC 100 is the only valid guidance until the new one is approved. Thus, the exact form of way marking is regulated in the Czech Tourists Club methodology.
Route marking for cyclists
Source: Czech Tourists Club