大家開山路真的都會開很快嗎? - 汽車
By Agatha
at 2022-09-19T12:30
at 2022-09-19T12:30
Table of Contents
大家常常在吵山路速限不合理的事情
但其實不是這樣的
速限規劃會考慮到安全性、漸變性和道路使用目的等
以安全性而言
從源頭的路線設計規範就會訂該道路的設計速率
設計速率會決定平面曲線的長度及半徑、縱坡度及豎曲線等限制
設計出一條合規範的道路後
速限一般會比設計速率低10-20
這是歸功於駕駛者喜歡超速的心態
另外考慮速限要調整的話要有一段距離緩衝,而且要慢慢降,不能50突然變30,駕駛會反應不及,以山路而言大部分的路段很難做到有這麼長的直線先加速限再減速限
最後是
那些開超過設計速率甚多的人
並不是因為道路速限太低
而是因為用了外內外的技巧截彎取直
但在道路設計的時候
是依道路中心線做規劃
下次開山路時 試試看完全依著車道線開而不偏移
會發現沒辦法超過設計速率太多
大概4醬
-----
Sent from JPTT on my iPhone
--
但其實不是這樣的
速限規劃會考慮到安全性、漸變性和道路使用目的等
以安全性而言
從源頭的路線設計規範就會訂該道路的設計速率
設計速率會決定平面曲線的長度及半徑、縱坡度及豎曲線等限制
設計出一條合規範的道路後
速限一般會比設計速率低10-20
這是歸功於駕駛者喜歡超速的心態
另外考慮速限要調整的話要有一段距離緩衝,而且要慢慢降,不能50突然變30,駕駛會反應不及,以山路而言大部分的路段很難做到有這麼長的直線先加速限再減速限
最後是
那些開超過設計速率甚多的人
並不是因為道路速限太低
而是因為用了外內外的技巧截彎取直
但在道路設計的時候
是依道路中心線做規劃
下次開山路時 試試看完全依著車道線開而不偏移
會發現沒辦法超過設計速率太多
大概4醬
-----
Sent from JPTT on my iPhone
--
Tags:
汽車
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