there are too much motorcycles, but motorcycles do not take up too much space in traffic.
I can also say that traffic congestion is due to private cars. most of the time I see cars or SUVs with only a single passenger inside-- imagine the space that car occupies compared to a lone rider.
here's a nice comparative poster/picture:

I'm just saying you don't need to stick with the 50% blend. That's recommended for countries where...
Coolant...