Certain parties and ideologies hold that it would be good for society and the environment if more people traveled collectively, that is by bus or train. They rarely mention goods.
Think about it!
If it is preferable to the environment if people journey together, then certainly it is preferable if goods do. It takes less fuel. There will be fewer vehicles.
So, in socialist countries in Scandinavia, there are lanes that only busses may use. On the contrary, there are signs saying trucks may not pass certain streets. Bus good. Truck bad. Nonsense.