“Confessions of a Recovering Engineer” by Charles L Marohn, Jr.

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  • Randomness is the enemy of safety
  • “High speeds are a design issue but low speeds are an enforcement issue”
  • Street widening should be called such instead of “street enhancements”
    • (If you claim to not be making value decisions, then your words need to reflect that)
  • Speed and mobility
  • Pre-automobile definitions:
    • Road: high-speed connection between two places
    • Street: A platform for building community wealth (places people want to be)
  • Cars were ruled as “ferocious beasts” and the owner’s responsibilities to manage
  • Perception of risk changes as safety is improved
  • Drivers drive at the speeds that feel safe and let us cruise on System 1
    • (Humans want to move as fast as they can feel safe)
  • High value per acre is always where people get out of their cars
  • Cities are designed to favor the out-of-town commuters
  • Congestion builds pent-up demand and encourages option development
  • Benefits of reduced travel time does not mean boost economic growth
  • Transit needs to have priority

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