静かな昼前の田舎道を歩いていると，その田舎道から200m位離れたところを並走する国道からダンプカーと思われる破壊的なクラクションの音がときどき聞こえます．ほぼ毎日かも知れません．その他はたまに緊急自動車のサイレンが聞こえるくらいです．<\/p>\n\n\n\n
聞く度に思うのは，あんな無駄に大きくて近くの人をトラウマに陥れかねないクラクションの音量は必要なのかということです．<\/p>\n\n\n\n
推測するに，もとは戦後のどさくさ期から高度成長期にかけて，荒っぽい工事現場で危険を回避するために必要だったのかも知れません．そうだとしても，公道を走るときとで音量を2段階に切り替えるくらいのことはできたと思います．その古い基準が見直されないまま来たんでしょうね．<\/p>\n\n\n\n
工事現場でも静粛性が求められている今日，ダンプ等の音量だけが無駄に大きい必要性はあるんでしょうか．<\/p>\n\n\n\n
2025年から大型車に自動ブレーキが義務づけられますから，公道での大音量のクラクションはますます必要なくなります．<\/p>\n","protected":false},"excerpt":{"rendered":"
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