3 ms·
Can someone clarify this: "...particularly at 200 meters and beyond. That’s how far cars will have to see at highway speeds if they want to give themselves mor
by 51Cards 9y ago
Can someone clarify this: "...particularly at 200 meters and beyond. That’s how far cars will have to see at highway speeds if they want to give themselves more than half a second to react to events."
200 meters, half second? That would mean the car is covering 1km in 2.5 seconds, or 1440km/h. Not sure what type of car is going that fast.
- mahyarm 9y agoProcessing lag probably contributes
- dtparr 9y agoMy reading is that the half second only accounts for reaction time, not stopping distance. Two cars head on at highway speeds would barely be able to stop from a 200m detection.
- nathan-muir 9y agoI think the author is slightly exaggerating here; not that the larger range wouldn't be useful. Assuming that there's a stationary obstruction that you must come to a complete stop. According to [1] the stopping distance of a car travelling at 70mph is 245ft (75m). A car travelling at 70mph is doing approx 31m/s. With a 0.5s reaction time, the car would travel only 90m, or; With a 200m range, the car would have 4s to initiate an emergency breaking manoeuvre. [1] http://www.government-fleet.com/content/driver-care-know-your-stopping-distance.aspx http://www.government-fleet.com/content/driver-care-know-you...