How much carbon emissions could be saved if we could convince more people to cycle instead of using their car?
This question came to my mind after reading a blog post by Felix Salmon. Felix runs a very good financial blog for Reuters and took issue with John Cassidy’s silly rant against bike lanes in New York City (as I did) . However, one point Felix raised in his blog really surprised me. He wrote:
The amount of pollution emitted by today’s cars is actually pretty low, while the amount of congestion they cause is enormous. I’d be happy to introduce Cassidy to Charlie Komanoff one day, the guy who’s actually done all the hard empirical math on this question. The pollution-related negative externalities associated with Cassidy’s drives into Manhattan are tiny, while the congestion-related ones are enormous — well over $100 per trip.
Can this really be true? Is pollution not an issue anymore with regard to cars? Unfortunately I was not able to open Komanoffs’ Excel file Felix is referring to on his blog. This is why I tried to answer this question myself doing some back-of-the-envelope calculations. I only focused on carbon emissions and took London as an example.