Mass Transport Systems Decree 550-07 Diesel (in Spanish)
The National Government issued Decree 550 of February 28/2007, by which it was established that Mass Transport Systems (STM) will pay local prices for all the diesel fuel they consume during their operation
Diesel quality improvement Diesel Fuel Quality (in Spanish)
Regulation of law 1083 – Clean Fuels Resolution 180128-04 (in Spanish)