(No implication of my opinion on Volvos.)
Most OEM's test tracks have circular tracks like this. The bank angle and the radius of that lane determines the speed at which the vehicle can follow the lane without steering input.
When the road is banked like this, it provides a natural centripetal (cornering) force for the vehicle to turn. Given the radius of the turn, that force can support a specific speed in the turn. If you go faster than that speed, you have to steer into the turn to provide more cornering force; if you go slower, you have to steer the other way to reduce the overall cornering force so that you don't drift into the middle. If you can keep the speed right around there, then no steering is needed. But you can do that on most modern cars today.
This particular track has a 200kmh lane (at 0 steering). It's much faster than most OEM test tracks. I believe this is the one they test the top speed of Bugatti's and McLaren's.
Most OEM's test tracks have circular tracks like this. The bank angle and the radius of that lane determines the speed at which the vehicle can follow the lane without steering input.
When the road is banked like this, it provides a natural centripetal (cornering) force for the vehicle to turn. Given the radius of the turn, that force can support a specific speed in the turn. If you go faster than that speed, you have to steer into the turn to provide more cornering force; if you go slower, you have to steer the other way to reduce the overall cornering force so that you don't drift into the middle. If you can keep the speed right around there, then no steering is needed. But you can do that on most modern cars today.
This particular track has a 200kmh lane (at 0 steering). It's much faster than most OEM test tracks. I believe this is the one they test the top speed of Bugatti's and McLaren's.
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