| 摘要 |
PURPOSE: A road stud is provided to execute construction work simply and rapidly and to keep the binding strength firmly against expansion and contraction or transformation of a road by a difference in temperature by weather. CONSTITUTION: The road stud comprises: a main body(4) having a reflective plate or an illuminant; and an anchor bolt(6) connected on the base of the main body(4). Wherein the anchor bolt(6) contains a pipe(14) fixed to the main body(4) and provided with many cut-open grooves(12), a wrench bolt(16) coupled to the upper part of the pipe(14) and a conic flared part(18) screwed on the wrench bolt(16) from the base of the pipe(14).
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