The world has begun configuring special methods for energy, and renewable energy is one of the energy sources which they are ready to invest highly on.

Vehicles being one of the highest consumers of oil are the highest polluters and the Green Path has been implemented in Sri Lanka to reduce the number of vehicles which are unworthy to run on our roads.

A vehicle should be tested for its road worthiness here in Sri Lanka to get its Revenue licence.

According to an official the Green Path is not effectively implemented as a number of unworthy vehicles are still on the streets.

"Private vehicles are of course tested and passed for the revenue licence but the problem is with public vehicles," the official said.

"The transport service of Sri Lanka is one of the highest polluters," he said.