4 ms·
Those benefits have eroded a bit over time. Rail vehicles have become pretty good at acceleration and deceleration, with acceleration often being limited due to
by danhor 3y ago
Those benefits have eroded a bit over time. Rail vehicles have become pretty good at acceleration and deceleration, with acceleration often being limited due to passenger comfort.
Similarly high(er) grades of 8%-10% are now quite possible with high-performing vehicles.
- throwaway2037 3y ago8-10% Woah: Where? Tokyo's Toei Oedo (circle) line is considered steep by modern standards and has special cars with "linear induction motors" that can traverse up to 5% grade.
- iggldiggl 3y agoWikipedia claims reason for the linear motor on the Oedo line was a smaller loading gauge and therefore smaller tunnels required. And generally speaking 5 % wouldn't be considered very steep at all by modern standards. Gradients up to 4 or even 5 % weren't uncommon even on older rapid transit systems dating from a century ago, and for modern multiple units I'd regard 4 to 6 % as about par for the course. And in hilly terrain, a number of systems definitively go beyond that into the 8 – 10 % range, including some new built systems (e.g. the light rail systems in Stuttgart, Tenerife and Jerusalem).