AR3-GP wrote: ↑02 Jul 2023, 21:18
Why is Suzuka lined with grass?
Because it is old and mostly hasn't been updated as Honda are purists.
Red Bull are purists too, but most of the 'safety upgrades' to the A1 Ring had already been done before they bought it I believe (apart from the new chicane for motorcycles, of course).
organic wrote: ↑02 Jul 2023, 20:40
Most tracks have a zero cost method of reliably enforcing track limits. Why isn't this appealing to many?
Of course it's appealing. However Grade 1 circuits, especially if they are modern or have been modernised, have to meet different requirements than typical Grade 2 or Grade 3 grass-lined circuits.
Grandfathered solutions seem acceptable to the FIA however. Monza has gravel on some of the corner exits, as does Imola. Zandvoort seemed to be permitted to have looser requirements than "new, new" circuits like Abu Dhabi, Turkey, COTA, Shanghai etc.
Realistically, you can look at the layouts at Zandvoort -- and indeed Suzuka -- and be
surprised they were given FIA Grade 1 status, as they are both quite narrow and fast circuits and don't seem especially safe!
Really it seems that circuits like Imola, Suzuka, Mugello, Portimao etc (and indeed Zandvoort, as all they did for Grade 1 was add two banked corners) have been "grandfathered" in to Grade 1 status.
For example would Brands Hatch be given Grade 1 status again if it didn't install tarmac run off areas?!
Street circuits also seem to have lower requirements to meet Grade 1 when compared to circuits like COTA or Abu Dhabi, hence the high speed sweepers being permitted to be added to (the itself outdated grass-lined 1996-style) Albert Park despite limited runoffs.
Anyway, hopefully a solution can be found where a strip of gravel or grass is temporarily installed around the outside of turns 9 & 10 for F1 meetings and then repaved for the rest of the racing calendar at the Red Bull Ring. It should be a relatively minor cost in the grand scheme of hosting a Grand Prix.
Obviously the previous solution -- temporary sausage kerbs -- was deemed too dangerous, in terms of spinal injuries or worse, and is no longer used.