https://www.bloomberg.com/news/articles/2023-01-10/these-are-the-world-s-most-congested-cities
Overall, trains can move people and goods more efficiently. Then busses and trucks, but there still needs to be a good road network as well.
https://en.wikipedia.org/wiki/Traffic_congestion#India
https://www.cbsnews.com/pictures/worst-traffic-cities-in-the-world/
https://en.wikipedia.org/wiki/Traffic_congestion#United_States
https://www.nytimes.com/2023/01/06/us/widen-highways-traffic.html
https://jalopnik.com/the-15-most-congested-highways-in-america-1850203444
https://en.wikipedia.org/wiki/Traffic_congestion#United_Kingdom
https://inrix.com/press-releases/2022-global-traffic-scorecard-uk/
https://en.wikipedia.org/wiki/Traffic_congestion#Australia
https://en.wikipedia.org/wiki/Traffic_congestion#Canada
https://ontruck.org/caa-hwy-401-near-t-o-one-of-north-americas-worst-bottlenecks/
Bottleneck and choke-point planning is the worst way to go. However, that's been the norm for the BC part of Canada for decades.
https://vancouver.citynews.ca/2023/02/22/vancouver-traffic-worst-north-america
https://dailyhive.com/vancouver/metro-vancouver-traffic-second-worst-north-america
http://fourthplan.org/action/highway-congestion