> In the chart here we see global transport emissions in 2018. This data is sourced from the International Energy Agency (IEA) [2].
> Road travel accounts for three-quarters of transport emissions.
> Most of this comes from passenger vehicles – cars and buses – which contribute 45.1%. The other 29.4% comes from trucks carrying freight.
[1] https://ourworldindata.org/co2-emissions-from-transport
[2] https://www.iea.org/data-and-statistics/charts/transport-sec...
For example, it's more impactful to swap out 1 million trucks driving 12 hours a day than 10 million cars each being driven for less than an hour. Same as for buses, they're on the road all day long doing multiple trips.
And that really brought home how a public transport infrastructure also massively benefits drivers. Cities without it (I'm thinking of LA specifically) are gridlocked.
As a driver you want everyone to be walking, cycling, taking the bus/trolley/tram/train/...
Why? Because you'd be alone on the road.