OPTIMIZATION METHODS OF URBAN RAIL TRANSPORTATION AND POPULATION EXPOSURE CALCULATION

Abstract

Noise is a major source of dissatisfaction in residential areas. There are many noise sources in the urban areas, but only some of them can be taken into consideration for noise mapping and noise reduction action planning. These are: road traffic, railway traffic, airports and industry. The research paper intends to make the optimized noise map of the rail transport of Tg. Mureş city. The local authorities mentioned that they would like to reduce in the future the rail noise. Therefore it was made some investigation and resulted that one optimization could be that along the rail line where the buildings are close to one another, noise barriers could be mounted, reducing the rail noise in this way with 5 – 10 dB (A). Another optimization is welding the rail joints and reducing the speed limitation to 50 km/h along the urban area resulting a 2 dB (A) reduction.