The Mayor's Ambient Noise Strategy - Greater London Authority

96 Mayor of London
The Mayor’s Ambient Noise Strategy
References and notes
1 Often measured using the equivalent continuous sound level, L eq
, see
Appendices A2 and A8.
2 Often measured using the maximum sound pressure level level, L max
, see
Appendix A8.
3 DEFRA. ‘Towards a National Ambient Noise Strategy’ Consultation paper,
DEFRA, November 2001.
4 Available from http://www.transportforlondon.gov.uk/
5 Sandberg U. ‘Noise Emissions of Road Vehicles: Effect of Regulations’
Final Report 01-1, I-INCE Working Party on Noise Emissions of Road
Vehicles (WP-NERV), International Institute of Noise Control Engineering,
July 2001.
6 Note: The noise levels quoted above are for individual vehicles as ‘type
approved’ in terms of the international standard ‘drive by’ test (ISO 362).
In this test, unladen vehicles approach a test area at a speed of not more
than 50 kilometres per hour (30 miles per hour) and then accelerate at
maximum throttle over a measured distance. This exaggerates noise
emission from certain components, and may encourage vehicle makers to
use technologies which are less relevant to minimising noise in modern
urban traffic conditions. A stationary noise test (ISO 5130) is used in
some countries. Alternatives include a 2-stage test, with both acceleration
and cruise-by components.
7 New vehicles are subject to exterior noise certification according to
European Directive 1992/97/EC, which is implemented in the UK through
the Road Vehicle Construction and Use Regulations 1986, as amended.
The latest standards came into effect in 1996.
8 Abbott PG, Phillips SM, Nelson PM. ‘Vehicle Operation and Road Traffic
Noise Reduction’ Institute of Acoustics Proceedings, Volume 23(5), 2001,
pp 53-60
9 Kemper GD. ‘Noise emissions from road vehicles and provisions for noise
reductions’ Proceedings of Inter-Noise 85 conference, Munich, 1985
10 www.actionenergy.gov.uk; www.energy-efficiency.gov.uk/transport
11 www.greenerfleet.org.uk