Comment by HPsquared
2 days ago
Freight trains have very powerful versions of those onboard. You'd just have to repurpose them. It's called "dynamic braking".
2 days ago
Freight trains have very powerful versions of those onboard. You'd just have to repurpose them. It's called "dynamic braking".
Some electric cars have that as well.
Btw, many passenger trains have something like that as well, especially in the metro or tube: the stations are deliberately built slightly higher than the normal lines, so that you can convert kinetic and potential energy back and forth.