MYNORTHWEST NEWS

Seattle traffic engineer: ‘Our street design is harming people’

Mar 23, 2021, 11:06 AM

Seattle traffic street design...

An intersection in Seattle's Capitol Hill neighborhood. (MyNorthwest photo)

(MyNorthwest photo)

A recent report released by the City of Seattle revealed that 2020 was the deadliest year for traffic-related deaths since 2013. While there are likely a few factors driving that increase, one city traffic engineer says it really comes down to the way Seattle’s streets are designed.

Seattle adds new signals as part of initiative to end traffic deaths

A separate recent report cites reckless driving habits as one of the primary factors behind a nationwide increase in traffic deaths. Seattle traffic engineer Dongho Chang believes the problem is far more systemic than that.

“Our street design is harming people,” Chang said on Twitter on Tuesday. “Conforming to the rules is hurting and killing people outside the vehicle in urban cities where people are the priority.”

He cites rules that have engineers forced to prioritize “excess traffic lanes” that encourage speeding, as part of “conditions dictated by our profession.” Efforts to design streets in ways that prioritize pedestrian safety can often flout existing rules, too.

“In order to protect people quickly, we are forced to break the rules,” he described. “(Traffic design rules) must not be a barrier to safety of people outside the car.”

Seattle data: Most pedestrian crashes from cars turning at intersections

In order to mitigate against that, Chang recommends organizing streets in ways that “reflect the community.” That means supporting lower speed limits, building out streets limited strictly to pedestrian traffic and community gathering spaces, and installing “speed mounds” that significantly slow vehicle traffic.

Seattle made progress toward at least one of those goals in early March, when it finished lowering speed limits on most city streets to 25 miles per hour. That was a decision driven by case studies indicating “a 20-40% drop in crashes on streets where Seattle lowered speed limits.”

But it’s also going to take more than simply lowering driving speeds, Chang argues, stating that context is what really matters when it comes to designing city streets versus freeways.

For freeways, he points out how “uniform design matters.” But for residential, urban streets, “place matters.”

“Small changes can have big impact on how we perceive and experience our streets,” he said. “It can also significantly improve safety.”

MyNorthwest News

Image: A Renton Police Department vehicle...

Julia Dallas

Teen turns himself in after deadly Renton shooting

Renton police were sent to reports of a shooting after a 16-year-old man called in saying he shot someone.

9 hours ago

Photo: Israeli Iron Dome air defense system launches to intercept missiles fired from Iran, in cent...

Tia Goldenberg and Josef Federman, The Associated Press

Israel is quiet on next steps against Iran — and on which partners helped shoot down missiles

On Sunday, Israel's leaders credited an international military coalition with helping thwart a direct attack from Iran.

10 hours ago

Photo: The Gorge Amphitheater campgrounds....

Julia Dallas

Families of Gorge shooting victims suing festival organizers

A lawsuit against Live Nation alleges the entertainment company did not enforce measures to prevent the Gorge shooting.

14 hours ago

Camas, Washington. (Photo: Money.com)...

Bill Kaczaraba

From mill town to top-ranked living destination: Washington city stands out

Once a mill town, Camas, Washington, has earned accolades as one of the premier places to reside in the United States.

15 hours ago

Photo: At 6:39 a.m., Eastside Fire crews extinguished most of the fire at a Snoqualmie business....

Julia Dallas

Crews put out fire that engulfs Snoqualmie business

The flames took over a business in the 8100 block of Railroad Avenue Southeast in Snoqualmie Sunday morning.

18 hours ago

Costco vs. Boeing...

Bill Kaczaraba

A study in contrasts: Costco vs. Boeing

In the state of Washington, two corporate giants stand out: Costco and Boeing. A recent poll conducted by Portland-based DMH Research sheds light on how we perceive these companies and other major players like Amazon, Starbucks, and Microsoft. The study, obtained by MyNorthwest, polled 500 adults across the region. The poll measured residents’ “perceptions of […]

1 day ago

Seattle traffic engineer: ‘Our street design is harming people’