google map 能詳細建議 汐五,五楊高架嗎 - Toyota
By Susan
at 2019-10-06T21:57
at 2019-10-06T21:57
Table of Contents
乳題...
這個問題很久前就想問,但一直忘記
終於今天問了(多久?拖兩三年以上,不誇張)
假設我從楊梅要去汐止,那我可以走一高
而走一高時可能可以走五楊高架及汐五高架
不走的話就在一高上
其實不過是平行而已
但如果我要從哪個交流道出去,就必需斤斤計較
因為兩個高架並沒有每個交流道都有出口
和同學討論這問題時
同學說:當然可以,你知道美國 GPS 衛星其實精度到達一公尺嗎?
我一聽就三條線;問題不是這樣討論的吧..
之前我用 Panasonic 衛星導航
忘了哪款,就 TOYOTA 幾年前官方合作那款,DVD機,每兩年要更新一片光碟
這幾年沒支援沒更新了;它名聲不錯
有些導航雖然常更新,反而會帶著大車走小路
還不如這款更新慢,但基本上帶著走大路
這款衛星導航會讓你覺得很準,因為它是車機
它有輪胎回饋,即使進了沒訊號的山洞,都還會繼續計算前進
它也有陀螺儀,因此在車輪行進很少但是轉彎時,可以準確計算角度
(否則都要等車子有相對位移了,才會知道車子轉彎了)
而因為理論上車子不可能撞進建築物裡
(其實它是設計成先預估你不會 off road)
所以即使訊號誤差了幾公尺
但螢幕上顯示的位置精確很多
但也因此,事實上不是 GPS 很精確
而是軟體在進行修正
而且美國並沒有把最高精度的 GPS 訊號分享出來;它有加雜訊
最高精度是打仗時給飛彈用的
我們一般晶片收到的都有誤差
'做得到',不代表'有在用'
而軟體修正,那就是一個猜...
偏偏呢,一高和其上的高架,還蠻近的(就平行啊)
雖然某些路段隔有點遠
但 google 也夠誤會的了
(有時我明明在高速公路上,它也以為我不在上面,而在平面
所以會教我一堆怎麼繞到交流道再重爬上來的路線)
Google 的路線建議,基本上就是大數據的應用
在大量車輛回報位置,目標等資訊後
估算出有沒有塞車,建議最佳路線
而該不該上高架,那是幾乎很接近的資訊
所以 Google 有沒有能力建議要不要上一高的五楊,汐五高架呢?
-----------------------------
我投不行一票
就我看到的感覺是沒指示出來
而我每次是能上就上
高速公路的高速公路 XDDD
雖然只有兩線道
但飛愈高愈爽
當然不要哪天像宜蘭那座橋一樣崩下來
那真的會嚇死人
一次就回本...
--
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