To make things worse, they often face unpredictable waiting times. The government of the Federal District has recognised the many challenges posed by CETRAM and the need for a strategy to improve them. In turn, private parties pay a financial compensation to the Federal District government. In the State of Mexico, the concept of CETRAM is less developed, and no institutional framework or overall strategy exists for co-ordination with private operators or between governmental agencies for modernisation of transfer centres.