Adding to it, the administration’s, particularly transport department, lack of planning to put an alternative system in place is going to add more agony to commuters.

Though the police is yet to create any modalities for the cumbersome work, traffic police sergeants have been asked to seize the “illegal” vehicles.

About 75,000 licensed autos ply in and around the city, of which 70 to 75 per cent are two stroke ones.

In the main city area, there are around 30,00 autos. Though the police have got instructions to seize the vehicles, the details of the operation are yet to be worked out.

“We have got instructions to seize the vehicles but the details need to be worked out as yet,” said DC Traffic Dilip Banerjee.

An official of the traffic department said that the traffic sergeants have been instructed to chase the vehicles. Unlike the last time when seized vehicles were taken to Belgachia depot, this time the autos seized by the traffic would be rounded to nearest police station since no such ground as the depot has been identified for the purpose.

Amid this, the defiant auto unions have decided to resist police action. But at the same time, 9,000 applications have been submitted by auto owners who want to avail the government’s package as per which auto owners could get a new auto in return for surrendering their old.

The state government had initially assured the auto unions that the government would move court to seek an extension of the deadline to help in the gradual phasing out of the three-wheelers.

But only on Tuesday transport minister Subhash Chakraborty made a turn around announcing that the government would not seek an extension from the court.

“Till the CITU was undecided, the dilemma prevailed in the state government as well. But the moment CITU unions decided to abide by the ban, the state government also made its stand clear,” said a senior official in the transport department.