(18 Jan 2022, 5:46 pm)Bazza wrote Plenty of other traffic too. 

It’s common sense that one bus is going to be more polluting than one car.   It’s the number of cars that that bus can replace that’s the important figure. 

A quick Google brings up some stats that a bus carrying average occupancy of nine passengers is more polluting than a car with average occupancy of 1.57 people.