This is because vehicle exhaust fumes emit gases that are harmful to the environment, namely in the form of co gas or carbon monoxide which is one of several types of greenhouse gases.
Sane kaping kalih, lingkungan, macet yening mamargi antuk galah sane sue pacang ngawetuang polusi ring udara sangkaning asep kendaraan sane kaanggen pengendara motor utawi mobil.