It’s all about what you want to encourage. Inducing demand by improving roads has few positives, and after a while can cause more congestion than before the roa

It’s all about what you want to encourage. Inducing demand by improving roads has few positives, and after a while can cause more congestion than before the road was improved! On the side, it causes more pollution (until most cars are electric), is more dangerous for pedestrians and bikes, is space inefficient, etc. etc. So cities should want to induce demand in other types of transport (trains, busses, bikes, walking) and try not to induce demand for cars.