Noise level in tractors is usually higher than the other commercial vehicles due to its heavy work as well as unbalanced engine. This paper aims to investigate the noise levels of two different tractors namely Mahindra 575 DI and Massey Ferguson 1035 DI experimentally and give suggestions to overcome the noise pollution caused by the agricultural tractors. Sound level meter (Type 2250 hand-held analyser) is used to measure and record the noise levels. Maximum noise level observed in the study is 95.7 dB in Massey Ferguson 1035 DI tractor at the engine speed of 2000 rpm while the minimum noise level observed is 78 dB in Mahindra 575 DI tractor at the engine speed of 500 rpm when the tractors are operating in stationary condition. In moving condition, the maximum noise observed is 88 dB in the 1st gear position of Massey 1035 DI tractor moving at a radius of 5 m from the origin where sound level meter is placed. The minimum noise level recorded in moving condition of tractors is 69 dB in the 4th gear position of Mahindra 575 DI tractor moving at a radius of 15 m from the origin.
