| 摘要 |
PURPOSE: A speed bump is provided to enhance water discharge performance, lower the risk of accidents through visibility enhancement and extend the lifespan of a vehicle by the minimizing of shock transferred to a vehicle body and the preventing of speeding. CONSTITUTION: A speed bump(100) is formed by the connecting of a plurality of unit blocks(110). The unit block comprises first protrusions(112), second protrusions(114), central grooves, corner grooves, drain holes(210) and a finishing block. The first and second protrusions are upwardly protruded at an interval and are formed to have a height difference in a length or width direction. The central grooves are formed between the first and second protrusions, between the first protrusions and between the second protrusion. The corner grooves are formed on each corner of the unit block. The drain holes are formed on a point where the central grooves meet, and another point where the corner grooves meet.
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