日本MAZDA CX-5的自動煞車失效

今天瞄到的新聞

CX-5自動ブレーキ車停止せず

內容大意是:
日本的MAZDA車商舉辦試乘會,試乘車輛是CX-5,
讓民眾體驗這種前方感應障礙物會自動煞車的功能。
但突然此功能失效,車子從距離七公尺的板子一直到撞到了,都不會停止,
撞開板子之後撞到後面的會場柵欄,車子破損嚴重,
導致駕駛員(體驗的民眾)受輕傷,助手席的車商工作人員受骨折重傷。

這則新聞告訴我們,別太依賴這種靠感應器的自動煞車系統。
2013-11-11 23:19 #1
類似這種消息似乎不是第一次聽到
雖然說這類型的輔助安全配備
不會有駕駛人因為這樣而不踩煞車
可是如果真的在緊急狀況下該動作卻未動作
那花了錢加選配備,車廠大力宣傳
好像也只是買心安而已
話說這種狀況駕駛員"輕傷"已經有點超過
助手席人員"重傷"是怎樣一回事?
piyopiyo765 wrote:
今天瞄到的新聞CX-...(恕刪)

台灣的CX-5沒有配置SCBS
MAZDA6的柴油款有這裝置
與VOLVO不同的是
日本設計師的觀點為
油門或煞車踏板有作動壓力下
代表有人為因素或辨別
不會強制煞車
-------
在油門或煞車踏板有『含住』的情況
SCBS 是不會作動
完全放空沒有去處碰油門或煞車踏板
才會作動
-------
車輛主動緊急煞車--閃避前方狀況--後面車輛追撞
車輛沒有緊急煞車--沒閃避前方狀況(為了考慮後方)
---------
一個說主動介入、一個說人因考量.....
在寶馬濱江馬場耕耘的駱駝
所以是台馬有拔配備的意思嗎?

駱駝 wrote:
台灣的CX-5沒有配...(恕刪)
I cannot read Japanese, so I can only guess, please do not bombard me.

Auto-braking is a good feature but it is a combination of sensor/software/hardware to perform this task. What happened most of the time, is that it is activated at certain speed. (I don't know much about Mazda but Volvo used to be at 30km/h and later firmware upgraded to 50km/h)
I think most people remembers a youtube film showing a brand new Volvo S60 slamming into an obstacle where the auto-brake should activate and stop the car, it did not.

It is obvious on this Youtube film that the S60 was travelling beyond the 30km/h and therefore the auto-stop function ceased to function! Here is the problem, if you are driving, you know it is difficult to control your car speed at 30 or 35km/h, plus all vehicle speedometer has tolerance. I suspect this Mazda accident is that the driver think he is at the speed where auto-brake should activate but in actual, his speed may be either slightly above (meter fault) or he is not well under the limit for the system to activate.

Therefore, I think Volvo did the right thing. The cut-in limit is now at 50km/h which is more practical. That means, as long as you are under 50km/h, and if there are obstacles ahead and in the given distance, there is no action of braking, the car took over and stop for you. That is why, you can see on Mobile01, many driver reported sudden stoppage when auto-brake took action. That is what it should do. It is not to replace your judgment but rather a precaution measure, UNDER CERTAIN CONDITION, to protect on your behalf.

Again, I don't know if this is the case for Mazda incident but certainly, Mazda has a bad PR issue on hand. It will have to do something to repair the confidence of its feature. New technology are meant to bring good value, sometime, they need to be modified based on actual experience.

我印象中TOP Gear第二十季有CX-5與Tiguan的測試單元, Jeremy好像也要測試SCBS, 結果前幾次測試沒問題, 第三次測試時就沒有停止, 直接撞上前車的Tiguan, 還造成系統損壞.

不過測試這種系統很容易出現狀況, 原因不外乎原廠通常有設定某些特定條件下, 系統才會啟動, 可是一般臨時試車的人員, 並不很清楚哪些條件下才會作動, 結果就GG.

譬如說慢速停車時, 如果系統作動不就停不進去比較小的停車位, 可是如果你在測試時害怕, 速度放慢一些, 低於系統啟動標準, 結果就...撞上去..GG
昨天這起事故的新聞還不少。
現在日本警方調查也在釐清到底是SCBS故障,
還是使用者沒有遵守SCBS應該要有的條件下就去測試SCBS。
(SCBS要某個速度範圍才會有作用)

若是前者,SCBS故障,這對MAZDA使用者來說不是好消息,
特別是台灣MAZDA也開始有引進這套配備,
CX-5偷料沒有,但馬六柴油版可就有了。

若是後者,坐在助手席的MAZDA銷售人員該打屁股,
怎麼不提醒駕駛者測試此功能時該有的車速條件。

Smallbee wrote:
我印象中TOP Ge...(恕刪)



我記得Top gear有解釋說那是因為沒有超過車頭40%區域 馬自達的自動煞車不會作動
日本的是要在10~30KM之內才會有作用~
自動煞停這種功能本來就是以防萬一的作用~
不能只靠這個~

piyopiyo765 wrote:
昨天這起事故的新聞還...(恕刪)
這種取代人為判斷的設備真的只能做為輔助用,完全依賴的話不是沒事就是出大事!
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