![[meme] Trains -- not driverless cars -- are the future of transportation](https://lemmy.world/pictrs/image/f6468af5-8151-4b4c-b339-2fa0b0373c3a.webp){kind=link}
Image transcript:
Calvin (from Calvin & Hobbes) sitting at a lemonade stand, smiling, with a sign that reads, “Trains and micromobility are inevitably the future of urban transportation, whether society wants it or not. CHANGE MY MIND.”
Image transcript:
Calvin (from Calvin & Hobbes) sitting at a lemonade stand, smiling, with a sign that reads, “Trains and micromobility are inevitably the future of urban transportation, whether society wants it or not. CHANGE MY MIND.”
Wheels are 100% different on Heavy Rail, Metros and Light Rails.
In addition to that all 3 have different requirements for curves, runout and grades.
Source: my employer makes all 3.
Wheels mostly not. Though bogies for LR and everything else are very different.
And by wheel I mean steel disc, not breaking system, not suspension, not everything else.
A lot of light rail uses resilient wheels and heavy rail does not.
Wheel profiles (the shape of the part that actually touches the rail) are also very different between different categories.
Huh. Today I learned.