curiosity behind the vertical exhaust pipe in tractor.

1) Tractor is a off-road vehicle, usually used in every terrain plus water dominated areas, where, there are chances of water to get in exhaust pipe and causing harm to the engine and exhaust system itself.

2) Most of tractors don't have shielding cab, so to keep away from suffocation vertical arrangement is best.

3) Many chemicals are spread on crops or plants by driving tractor on the distance between plants. If exhaust system is horizontal and below the driver them harmful and hot emissions can harm the crop.

Special note - Sometimes the end of exhaust pipe is curved, or has a hinged cover flap which the gas flow blows out of the way, to try to prevent foreign objects (including droppings from a bird perching, rain drops, ice on the exhaust pipe when the vehicle is not being used) getting inside the exhaust pipe.