The new order by the Government of Karnataka, which is on the basis of an High Court order, says that no pillion seat will be attached to a motorcycle with less than 100 cc engine. Hope you got the difference the exclusion you have made could make.
The High Court order and the subsequent government order must be based on some statistics and so we cannot actually comment on it without knowing full facts. It may also be noted that since majority of bikes running on the Indian roads are 100 cc or above, the order will not have a large impact as is being projected in the thread.
'Knowing others is wisdom, knowing yourself is Enlightenment'- Lao Tzu
As far as I could gather,
The HC has directed the government based on a recent case, this is under consideration but not enforced,if it comes it would apply to less than 100 cc and no new alterations to add seats in the back would be permitted. If the vehicle is less than 100 cc and there is a pillion rider with an helmet sitting, logic would mean that they cannot go as fast as the motorbikes on which youngsters zoom past you.
When I read Mohan's post I thought it is meaningless to ask only one person on the bike. But once I saw the other clarifications, I feel it is not going to have such a big impact as the percentage of vehicles with less than 100 CC is very less. But making helmet compulsory for both is a very good method.
'Idhuvum Kadandhu Pogum "
Even this challenging situation would ease
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