> if you're really worried about collisions in the tunnels
Cars can fail, you have to leave enough room to allow cars behind to stop in time to avoid a (cascade) crash.
Cars can fail, you have to leave enough room to allow cars behind to stop in time to avoid a (cascade) crash.
(yeah, taking 140 km/h, quite high for a car especially in tunnels like this, but anything slower would be slower than our slow trains and would be quite disappointing)