Purpose: by preventing the load of a vehicle to be transferred from tire to internal road studs, a road studs is arranged to improve durability. Construction: a road studs (101) includes a upper housing (103), a slider (105), a back cover (107), a transparency cover (131), a reinforcement frame (135), an air-locked pipe (153), a spring (163) and a luminous unit. Upper housing is embedded in the bottom surface of a road. One reverberation (111) is installed in upper housing. Slider is installed inside upper housing. Back cover is connected to the bottom of upper housing. Transparency cover is mounted on sliding block top. Reinforcement frame is inserted into a frame fitting slot (133) of transparency cover. Air-locked pipe is arranged in back cover and upper housing and forms a citadel (159). Spring is inserted between air-locked pipe of back cover and the top at top. To outside, luminous unit is formed in the upper surface of slider, light is issued by transparency cover.
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