Chennai Traffic Police — Spot fine for a pillion rider 13 years

I passed the signal in green near Alexander square Guindy from Kathippara. when. I am passing right side road of Bharat Petroleum, I am blocked by a cop .He said that pillion rider is nead wearing the headgear/ helmet levying a spot fine.I argued being a small boy not attained 18 year and also the signal is not violated asked excuse ..Without considering the request challan is issued by Guindy station..Is there any target for this people or humanity ground the grant should be given...