Singapore is an island, a city state. It has a total land area of 650 square kilometres and a population of 4.1 million. With limited land and a high population density, it has to meet the challenge of building a comprehensive, efficient and yet environmentally acceptable land transport system.

Things had been done to their utmost to minimize the adverse impacts of an ever expanding transport network.

In highly urbanized Singapore, noise pollution from road traffic and MRT/LRT trains receives much attention. With further urbanization and the widening of expressways, noise levels have been gradually rising in some areas, especially those along existing expressways.
New buildings are required to fronting expressways, major arterial roads and MRT tracks to be set back from these thoroughfares so as to minimize the impact on residents.

In addition, Singapore have set noise emission standards for vehicles, and are using low-noise porous asphalt to pave our expressways. We have adopted noise-damped rail tracks and wheels for MRT trains. The LRT trains have rubber wheels, and we make them run on concrete tracks to keep the noise level down.