Originally Posted by R_Strowe

I did read what you wrote. And I stand by my assessment.

By it’s very nature, if you reduce speeds relative to other traffic (and that includes pedestrians), then reaction time improves and accidents are less likely to occur.

On the other hand, if everything is moving together at a relatively consistent speed, then reaction time also improves because closure rates are relative.

Any aircraft below 400’ is generally going to be flying at about 100kts give or take. Unless on exactly opposite courses, the effect of any impact begins to reduce. Physics 101. Which is why I stated it was a bad analogy.

R_Strowe

Originally Posted by franklin_m

"Any?"

Not true. There's books full of MTRs out there, all over the country, where aircraft are routinely operating well in excess of 250KIAS indicated at 200-400 AGL. I can't think of the last time I've flown one at less than 420 indicated. Altitudes vary by route but it was quite common to fly them at 420 indicated at 200 AGL. Strike-fighters often plan their routes at 480 indicated - 500 feet AGL and below.

https://www.faa.gov/air_traffic/publ...ction_5.html20