They deliberately make them unstable and can then utilize that to make turns that are sharper than otherwise possible. The drawback is that they have to be controlled by computers all the time. This led to a spectacular crash in Stockholm in 1993 where luckily nobody was hurt.
They deliberately make them unstable and can then utilize that to make turns that are sharper than otherwise possible. The drawback is that they have to be controlled by computers all the time. This led to a spectacular crash in Stockholm in 1993 where luckily nobody was hurt.