The urban electric train, a $345 million project, would be awarded in 2010.
A draft bid tender was presented by the National Concessions Council. 11 companies have shown interest in constructing and operating the train for 35 years.
"From the eleven candidates, six stand out for their previous experience developing train systems: CAF (Spain), Alston (France), Inekon Group (Czech Republic), Bombardier (Canada), Siemens (Germany) and Daebon Engineering - Hyundai Rotem (South Korea)", reports Nacion.com.