[aerohead]

Originally Posted by kach22i

SAE practices
https://www.researchgate.net/figure/...fig1_255700982


I know it's out there, but I cannot find it right now.

What are the recommend upvision and downvision angles (see image above)?

Aerohead has listed vehicle approach and departure angles along with the inside angles between the front and rear wheels - see below (forgive me if I wrote them down wrong).

Front: 10 degrees min.

Rear: 16 degrees min.

In-between wheelbase: 10 degrees min.

I'm doing a few sketches and the upvision angle (so driver can see traffic signals) seems a bit low on my design. Just want to check with some standards.

H124 in this link:
https://law.resource.org/pub/us/cfr/...1100.2001.html

The math on this PDF is daunting.
https://www.google.com/url?sa=i&url=...AAAAAdAAAAABAD

Nice PDF paper on ergonomics:
https://www.google.com/url?sa=i&url=...AAAAAdAAAAABAV

The SAE Handbook probably has the vision material. I'll look.
I think the approach, break-over, and departure angles are 16,10,10,and 10. I'll check.
The 'daunting' stuff is statistics. You might rearrange all the symbols and definitions.
Root Mean Square Error would be figured, then plugged in.
Go slow. Watch the brackets ( parentheses )