A bench of justices S Ravindra Bhat and Vipin Sanghi was of the view that the Tribunal's "speculative reasoning", suspecting appropriateness of the technology used in the third round of tests to ascertain the colour blindness, was "unsustainable".
The court's order to quash CAT's decision to conduct a fourth round of colour blind tests will adversely impact the effort of the around 600 DTC drivers to get back their jobs.
Setting the aside the Tribunal's order, the bench also held that CAT "cannot act as an authority over the medical expert and sans a strong reason, based on relevant material, it cannot hold that the technology used by three separate medical teams to test colour blindness was inappropriate or outdated."
The court was also of the view that CAT could not have issued directions for a fourth round of tests as "no rule, administrative circular, law or guideline was shown to have been violated" in issuing the decision to hold a third round of medical examination.
"In the present case, no rule, administrative circular, law or guideline was shown to have been violated; there was no allegation of lack of bona fides in the decision to hold a third medical test. In these circumstances, CAT's order directing a fourth medical test, was unwarranted," the court said.