"You have neither filed any status report, nor said anything on the destination buses. You had to give us everything, why didn't you do it? Do it at the earliest," the bench, also comprising Justice R S Rathore, said.
He also urged the bench to stop the service on weekends as most of the offices are closed, leading to empty buses plying.
Earlier, the green panel had directed the authorities to ensure that at least four buses each should start on an experimental basis from far-off areas like Dwarka, Rohini, Janakpuri, Badarpur border and Patparganj and terminate at places like CGO complex, Nehru Place and Shastri Bhawan near Central Secretariat.
It had also sought a detailed status report with regard to the impact of these buses on reduction in pollution in the city and directed the authorities not to stop this service unless directed by the tribunal.
The apex environment watchdog had said the primary objective behind introduction of this service is to reduce the vehicular load including cars and two-wheelers on the roads.
The green panel had said these services will start from spots where it is convenient for the public at large.
The NGT had said introduction of such bus services would facilitate an individual to opt for such a service, rather than driving a car alone on highly-congested roads.
It had directed the Delhi Transport Corporation to maintain these buses and engage their staff for cleaning and maintaining them.
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