Today’s Headlines

  • More on Tenderloin Collision that Killed Pedestrian (Fox2)
  • Why Hit and Runs Happen (EastBayTimes)
  • D5 Candidates Discuss Transportation Positions (SFExaminer)
  • More on Yesterday’s Embarcadero Station Flood (SFChron)
  • AV’s Mean We’ll Need Public Transportation More than Ever (WEForum)
  • Housing Market Helping Fuel the Economy–and Inequity (Curbed)
  • Most Expensive Counties are All in the Bay Area (SFGate)
  • Transit Study for East Contra Costa (EastBayTimes)
  • More on ‘Diverging Diamonds’ Coming to California (SFGate)
  • Comparing New York and San Francisco (TheObserver)
  • California HSR Inspires Project for Pacific Northwest (SFGate)
  • Commentary: How Best to Invest in Clean Air (SFExaminer)

Get state headlines at Streetsblog CA, national headlines at Streetsblog USA

  • sf in sf

    Re: “diverging diamonds” – sad to see accommodating people on bike or foot is still an afterthought for California, if it’s thought about at all. I hope Bike East Bay is mobilizing to oppose the use of this car-centric design for Ashby.

  • Andy Chow

    Why the hate? A lot of well designed diverging diamonds have separated bike and ped paths just like the advocates wanted. It is a freeway interchange what kind of traffic do you expect?

  • Alan_Tobey

    The design for the eternally-delayed rebuild of the I-80 interchange at Gilman Street thoroughly includes pedestrian and bicycle circulation. The central design idea is different: two closely linked trafic circles — not at all unusual in Europe but will be an initial challenge here. Novelty typically fades within months.

  • jonobate

    The safest freeway interchange is where the ramps form a 90 degree T-intersection with the local street passing under the freeway. Those would be regular, signalized intersections that function much like T-junctions do throughout the city.

    The danger at freeway interchanges is traffic entering/exiting the freeway at shallow angles, without having to come to a stop before/after the freeway ramps. That’s easy to fix, but the diverging diamond doesn’t help the problem.

  • Andy Chow

    The problem is that these intersection need to be wide (more lanes) to handle traffic. Not unusual to have a 10 lane arterial at the interchange where 2 turning lanes are featured on each side. Diverging diamond can cut the width to 8 lanes and one of the turning lanes can be shared. That saved space can be used for better ped and bike facility.