推 jcboy:高音喇叭就是為了能在遠處就發聲,以便來得及煞車,像火車一樣 01/16 08:40
→ jcboy:所以我覺得應該要遠處用大聲喇叭,近處用小聲喇叭 01/16 08:42
那萬一有車子在遠還有車子在近怎麼辦？
有車子在近的地方用小喇叭
那視線不好時比較遠的車子就聽不到了怎麼辦？
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