David Weinberger: Road transportation is the biggest source of emissions in the United States. He says there are many problems with our road transportation network, including climate and safety. The US hit a 16-year high in annual traffic deaths in 2021, up to around 43,000 in a year he says. Writer: When you design cities such that you really can only access a good job, if you have a car, you're making it very difficult for those who have low incomes,. often minorities, to be able to improve their wages.

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