Abstract: As a main way for public transport at present, rail transit reduces the pressure of urban traffic and the energy consumption, but the railway noise pollution is the main factor limiting its development. Nowadays, most countries in the world are exploring ways to reduce the railway traffic noise and establish noise standards suitable for their own countries. Based on Bogota Metro Line 1 project, the comparative analysis of the noise standards for rail transit in major countries is conducted in this paper from the aspects of measured points, calculating and weighting method, etc. Meanwhile, the measured noise is evaluated by the standards in different countries, and it is shown that the equivalent continuous sound pressure levels are completely identical for the same noise, while the sound pressure levels varying over time are different due to different time weighting. The analytical results helped design the noise standards suitable for the Bogota metro project, which could provide a reference for railway traffic noise evaluation and for Chinese construction companies to expand overseas projects.