To improve the safety, operability and profitability of a racing bicycle with a transmitter in a simple structure.

A protruded tool 18 made of a rod nonconductive material, with a non-contact unit identification signal transmitter 20 fixed to the end is protruded downward with the end having no contact with a road surface and fixed to a seat tube 7 or other frame 2 structural members or a front fork 14 in a removable manner, so that damage to competitors including her/ himself and others due to the transmitter 20 can be prevented during turn-down accident and the protection of the transmitter 20 itself and the operability of a bicycle can be improved.