Traffic Noise Levels

Figure 1: Estimated change in traffic noise level after installing different types of speed control measures for a range of traffic scenarios

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Figure 2: Comparing average noise levels for commercial vehicles alongside different profiles

Horizontal deflections

Although the trials referred to in this leaflet only investigated the effects of vertical deflections, the advice given on limiting noise variation along a route will generally be relevant to the situation where a series of horizontal deflections such as chicanes or pinch points are installed.