Hi to all!
I note that old time circuits are handled like the moderns: to all track makers: be careful of the follow items:
1-in the old time circuits there weren't kerbs until end of '60.
2-there weren't guard-rails until mid of '50 (and only in rare cases...)
3-in 95% of cases, there weren't fences dividing pitlane from track (I don't know if this point is possible in GP3)
4-rarely were the grandstands
5-surely there weren't lifts and marshalls
6-BUT THEY USED HAY BALLS!
7-no skyscrapers around them
8-yes to crowd close to the tarmac
P.S.
I'm working on Riverside, is there anybody who has an altimetric profile of this circuit? this is big help for me! (robyct96@libero.it)
Thank you very much!