Kevin J. Krizek How COVID19 reshaped US cities TED

when you think of most cities in the u.s

images like this come to mind little

green space lots of fast-moving cars

bumper-to-bumper traffic

and humans waiting at curbs and

crosswalks clearly outranked by the

automobile

since the dawn of car culture urban

transportation planning has been fixated

on moving automobiles quickly now

one-third of all the land in cities

is set up for cars we add lanes to six

lane highways

we cut down trees to widen two lane

residential roads

we pave over scarce open space for

surface parking

many car owners effectively pay double

to reserve up

space at home and work

providing for cars was a massive

investment and has provided us

immeasurable flexibility in how we

travel

but our dependence on them the costs the

noise the pollution

have taken a toll on us we can now do

better

and here’s how i’ve been studying

transportation and environmental design

for 25 years

i’ve encouraged designers engineers

decision makers and the public

to look beyond our current car as king

model

but widespread change has been slow to

come

and then covet 19 hit and we went into

lockdown

conventional rules that kept the auto at

the top of the heap

were ditched almost overnight

we opened up our streets for people

walking in the middle of them

we open them up for outdoor dining

and those emerging techie modes of

getting around town this meant more room

for

regular bikes electric bikes and all

forms of wheeled devices that are

cleaner

lighter and more convenient than cars

signs like

this went up scenes like this appeared

using street space to preserve

physical and mental health became an

imperative

now many cities have been trying their

hand at alternative street designs for

decades

these initiatives gained sudden traction

and natural experiment was unfolding

what happens when cars take a back seat

to people

it propelled my colleague and me to

start studying these changes in 55 of

the largest cities in the u.s

and what we found is thrilling the

cities that are innovators in our study

are closer to finding solutions to some

of the most pressing and challenging

problems of our time

like climate change equity

safety seattle was one of the first to

jump into action i was on their bicycle

advisory board

20 years ago with bill nye the science

guy for decades they’ve dealt with

that crumbling auto infrastructure all

those bridges and viaducts

they’ve long been striving to bring more

equitable access to more people

on the streets shortly after the

lockdown

the city unfurled a 30-page playbook

to use their street space better a few

weeks later

26 miles of streets were closed through

car

traffic opening them up for people on

foot and bike

the city chose these particular areas

because they were underserved by

existing

pedestrian and bicycle infrastructure

and they were in neighborhoods that were

experiencing more of the impact

from the pandemic both from a health

perspective and

an economic perspective a month later

the city mayor of seattle announced that

20 miles of these streets were going to

be closed to cars permanently city

engineers are now

working with neighborhood groups

volunteer based organizations like

neighborhood greenways

to bring together residents in designing

alternative visions for streets

over the summer on the other side of the

country pittsburgh rolled out a bike

plus plan

as the number of people opting to block

and bike

exploded this plan enabled the city to

slow down car traffic on even more

streets

now pittsburgh has a long-standing

commitment to innovation and this bike

plus plan helps usher into the

transportation system

new innovative forms of mobility it

might be that dusty schwinn

hanging on the garage now refurbished

with battery power

a cargo bike or an electric

three-wheeled variant of a bike

that provides more comfort safety or

protection

from the weather you see these types of

modes

they can serve mostly the same purpose

as cars trucks suvs

but they do so using a third of the

space to get around

and these new modes they can be great

for older people or those without a car

so they can run errands or visit friends

you see pittsburgh

is redesigning their city streets now to

accommodate more of these human scale

vehicles

and what we’re seeing is that they’re

redesigning 50 miles of streets over the

next two years

to bring in more welcoming environments

for bike plus type vehicles

and in so doing they’re ensuring that

technological advances meet the needs of

humans

and not cars further the bike plus plan

is helping the city reduce

transportation related emissions

50 by 2030 all while expanding

affordable access

to jobs and destinations i’m excited to

keep an eye on pittsburgh as they share

lessons for street transformations

with other cities moving forward

we also looked at austin texas a city

always on the fastest growing cities

list

now that growth can be good but the

residents have felt the strain

they too launched a healthy streets

program opening up select streets to

just walking and cycling

now this action proved valuable in

helping residents

realize and broaden the benefit of their

tax dollars that typically pay

to serve cars new designs were

implemented on south congress

the iconic main street of texas in

downtown austin

we see in these historic photos how the

stretch of road has changed character

over time evolving with advances in

technology

civic priorities or public preferences

with city council’s direction this

stretch of road now has two

fewer lanes of car traffic a third of

the street space was given over to

people

bicycling and rolling on scooters taking

them off the busy sidewalks better

suited for dining under the oak trees

and giving them increased

comfort and safety austin residents

recently and overwhelmingly approved

more than seven

billion dollars in an unprecedented bond

referendum

a nice chunk of which is going to just

transform

streets for active mobility and safety

hundreds of low-cost

high-impact projects are going to help

build out a new bicycle and pedestrian

infrastructure

for residents of all ages and abilities

seattle pittsburgh austin and other

leading communities they’ve all done

their research

more than half of all car trips in urban

and suburban areas

are less than four miles think about a

trip to

the grocery store to the gym or to grab

a bite to eat

unlike a few years ago we now have more

mobility options for these short hops to

be easily satisfied using vehicles that

are lighter cleaner

and greener now we didn’t need a

pandemic or 80

reduction in our local economies to

realize that our love affair with cars

has lost its luster but the public

emergency

helps spur quick change we can now build

on this momentum

and push it further you see coven 19 has

allowed us to time travel to see what

our cities would be like

in 10 years when there’s other ways of

getting around town and

the car is not always king we’re past

sitting indifferent

as multi-ton vehicles go hurling by our

homes at highway speed

cars are too big for these short trips

we don’t need insulated hiking boots to

attend ballet class within 20 minutes

of where most of us live that is in our

existing communities

we already have the goods and services

that we access

on a daily or weekly basis streets are

the single largest physical asset in

cities they are owned by the public and

we can get more out of them to achieve

our goals

but to do so we need to open up our

aperture

and look beyond having them always be

set up for cars

rethinking streets ramps up our climate

crisis plans nationwide

it draws into focus how these spaces are

engines for equity

by adopting new formula for how

infrastructure resources

can be spent to increase accessibility

for all

and let’s not lose sight of another

public health crisis the number of

people who die

in car crashes equal to a boeing 737

going down every other day

the city actions that i’ve described

document how streets

can change to accommodate emerging

cost-effective solutions

all while out without sacrificing much

comfort convenience

or accessibility a hundred years ago

as cities were grappling with issues of

clean water and safe housing

streets were handed over to a relatively

narrow goal

of maximizing vehicular traffic flow now

owing to technological economic and

environmental change

we hold in our hand the prospects for a

much brighter future

and we know how to get there we’re in a

once in a century situation with the

pandemic

we have the public’s attention

repurposing streets by inviting smaller

vehicles into our lives

and de-emphasizing cars is possible

the evidence shows us that in the long

run we’ll save money

lives and will make our communities more

just and resilient

thank you

当你想到美国的大多数城市时,

就会想到这样的图像

规划一直专注

于快速移动汽车 现在

城市中三分之一的土地

已经建成汽车 我们在六

车道高速公路上增加车道

我们砍伐树木以拓宽两车道

住宅道路

我们在稀缺的开放空间上铺设

地面停车场

许多 车主实际上支付了双倍的费用

在家中预留空间,并且

为汽车提供工作是一项巨大的

投资,并为我们的旅行方式提供了

不可估量的灵活性,

但我们对它们的依赖是成本

噪音污染

对我们造成的损失我们现在可以 做得更好

,这就是我 25 年来一直在研究

交通和环境设计的方法

我鼓励设计师、工程师、

决策者和公众

o 超越我们目前的汽车作为王者

车型,

但广泛的变化来得很慢

,然后觊觎 19 号,我们进入了

封锁

让汽车保持在

最顶端的传统规则

几乎在一夜之间被抛弃

了我们为人们开辟了街道

走在它们中间,

我们为户外用餐

和那些新兴的技术人员

在城里走动这意味着更多的空间可以

容纳

普通自行车电动自行车和各种

形式的轮式设备,这些设备

比汽车更清洁、更轻便、更方便。

像这样的场景出现了,

利用街道空间来保持

身心健康成为

当务之急,

现在许多城市几十年来一直在

尝试替代街道设计,

这些举措突然受到关注

,自然实验正在

展示当汽车坐在后座时会发生什么

它促使我和我的同事

开始研究美国 55

个最大城市的这些变化 我们

和我们所发现的令人兴奋的

是,我们研究中的创新者城市

更接近于为我们这个时代

一些最紧迫和最具挑战性的

问题找到解决方案,

例如气候变化股权

安全西雅图是

我最先采取行动的城市之一 他们的自行车

顾问委员会

20 年前和科学专家比尔·奈(Bill nye)

几十年来他们已经处理

了摇摇欲坠的汽车基础设施所有

这些桥梁和高架桥

他们长期以来一直在努力

为更多人

在封锁后不久在街上提供更公平的使用权

几周后,这座城市展开了一本 30 页的手册,以更好地利用他们的街道空间

26 英里的街道因

汽车

交通而关闭,为

步行和骑自行车

的人开放 城市选择这些特定区域

是因为

现有的

行人和自行车服务不足 自行车基础设施

,他们所在的社区

受到大流行病的更多影响

一个月

后,西雅图市市长宣布,

这些街道中的 20 英里

将永久禁止汽车通行 城市

工程师现在

正在与社区团体合作,

以社区绿道等志愿者为基础的组织

,将居民聚集在一起设计

替代愿景 对于

该国另一边的夏季街道,

匹兹堡推出了一项自行车

加计划,

因为选择封锁

和骑自行车的人数

激增,该计划使该市能够

减缓更多街道上的汽车交通,

现在匹兹堡有一个长期的-

对创新的坚定承诺和这个自行车

加计划有助于引入

交通系统

新的创新移动形式

可能是

挂在车库上的尘土飞扬的 schwinn 现在

用电池供电翻新

一辆货运自行车或一辆电动

三轮自行车变体

,提供 更舒适的安全性或

天气保护,您会看到这些类型的

mod es

它们的用途

与汽车卡车 suv 几乎相同,

但它们使用了三分之一的

空间来四处走动

,这些新模式非常

适合老年人或没有汽车的人,

这样他们就可以跑腿或拜访

你的朋友 看到匹兹堡

现在正在重新设计他们的城市街道,以

容纳更多这些人类规模的

车辆

,我们看到的是他们

在未来两年重新设计 50 英里的街道,

为自行车加型车辆

和在 他们这样做是为了确保

技术进步满足人类的需求,

而不是汽车的需求 自行车加计划

正在帮助城市

在 2030 年之前减少 50 与交通相关的排放量,同时扩大

负担得起

的就业机会和目的地,我很高兴能

密切关注 在匹兹堡,当他们与其他城市分享

街道改造的经验时,

我们还研究了德克萨斯州奥斯汀市

,这个城市总是在增长最快的城市

名单上

现在增长可能是好的,但

居民也感受到了压力,

他们也启动了一项健康街道

计划,将选定的街道开放给

步行和骑自行车,

现在这一行动被证明对

帮助居民

实现和扩大他们通常支付的税金的好处是有价值

的 服务汽车 新设计

在南国会实施

德克萨斯州奥斯汀市中心的标志性主要街道

我们在这些历史照片中看到

随着时间的推移随着技术的

进步

公民优先事项或公众偏好

随着市议会的方向发展,这

条路如何改变特征 的道路现在

减少了两条车道的汽车交通三分之一

的街道空间被分配给

骑自行车和骑踏板车的人,使

他们离开繁忙的人行道,更

适合在橡树下用餐,

并为他们增加了

舒适度和安全性最近奥斯汀居民

并以压倒性多数批准

了超过 70

亿美元的前所未有的 nted 债券

公投其中很大一部分将只是

改造

街道以提高主动流动性和安全性

数百个低成本、

高影响力的项目将帮助

为所有年龄和能力的居民建造一个新的自行车和行人基础设施

西雅图匹兹堡奥斯汀 和其他

领先社区 他们都进行

了研究

超过一半的城市

和郊区

的汽车旅行不到 4 英里 考虑

去杂货店去健身房或

去吃点东西,这

与几年不同 以前,我们现在有更多的

出行选择,

可以使用

更轻

、更清洁、更环保的

车辆轻松满足这些短途旅行的需求 但是公共

紧急状态

有助于促进快速变化,我们现在可以

在这一势头的基础上

进一步推动它,你看,第 19

届会议让我们能够穿越时空,看看我们的城市是什么样的 就像

在 10 年后,当有其他方式

在城里穿梭时

,汽车并不总是王者,我们已经过去

无动于衷,

因为多吨重的汽车

以高速公路的速度从我们家附近飞驰

而过,汽车对于我们这些短途旅行来说太大了

不需要绝缘登山靴就

可以在我们大多数人居住的地方 20 分钟内参加芭蕾舞课 在我们

现有的社区中

我们已经拥有

我们

每天或每周访问的商品和服务 街道是

最大的单一实物资产

城市归公众所有,

我们可以从它们中得到更多来实现

我们的目标,

但要做到这一点,我们需要打开我们的

视野,超越让它们总是

为汽车设置,

重新思考街道,在全国范围内加强我们的气候

危机计划

通过采用新公式来说明如何使用

基础设施资源

来增加所有人的可及性

并让我们不要忽视另一个

公共场所,从而聚焦这些空间如何成为公平的引擎 健康危机

死于车祸的人数相当于一架波音

737 每隔一天

就坠毁 我所描述的城市行动

记录了街道

如何改变以适应新兴的具有

成本效益的解决方案,

同时又不牺牲太多的

舒适便利性

或 一百年前,

由于城市正在努力解决

清洁水和安全住房问题,

街道的可达性被移交给了一个相对

狭窄的目标

,即最大限度地提高车辆交通流量,现在

由于技术经济和

环境的变化,

我们掌握

着更加光明的前景 未来

,我们知道如何到达那里 我们正

处于百年一遇的

大流行病中

我们引起了公众的关注

通过邀请小型

车辆进入我们的生活

和不再强调汽车来重新利用街道

有证据表明,在很长一段时间内

跑步,我们将挽救

生命,并使我们的社区更加

公正和有弹性,

谢谢