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̱ ǿ Ǽ Ȱȭ ؼ Ǽ Ȱȭ ʡ Ǽ ϴ ǥ ü 49% ̻, Ǽ ϴ Ǽڴ ü ϵ 60% ̻ ϵ ϰ ִ١鼭, Ǽ ü ̷ Ⱥδ١ ߴ.
鼭, 31 ñ ȸǼ, Ǽȸ Ǽ ü ϸ ü ̸, ̴ ĥ ̶͡, Ǽ Ǽ ü μ ȸ ߴ.
̱ ȯ Ȱ ϱ ü Ѵٴ ǰ߿ Ѵ١鼭, ̿ ñ Ǽ ü ϰڴ١ ߴ.
, ǿ ϸ鼭 PMS (Pavement Management System, ý) ̿ ȹ ֱⰡ θ ϰ, ο ܡ ƮȦ ļ ϴ óϰ ִ١鼭, ̷ ʰ ־ 簢 ȴ١ ߴ.
̿, ̱ 800 Ͽ ο ٷ ġ ֵ ϰ , Ȳ ó ذ ʵ ϰڴ١ ߴ.
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