Comparison between a single rail line with a standard four lane highway
Spatial Performance of Rail and Road Transportation
Rail is far more efficient than road in terms of capacity and space consumption. For instance, rail has more than double the capacity (335,000 tons per km per day compared to 150,000 tons per km per day for road) and three times the spatial performance (in tons per km per m2 per day) of roads. However, road transportation is more flexible in terms of spatial reach.