7 ms·

San Francisco has a number of large hills and other slopes where natural local phenomena can significantly enhance velocity.

• teddyh 9y ago
  Places with many large hills don’t tend to get many bikers.
  • Kalium 9y ago
    You may find that San Francisco is an unusual place in a number of ways.
    • teddyh 9y ago
      In which case we shouldn’t be using it as an example to argue about what should be done in the general case, e.g. nationwide.