A fair cop! Accurate breath analysis and speed detection
Useful Sites
National Measurement Institute (Australia)
How
Australia's measurement system works
An overview of the basis of measurement in Australia.
Significant achievements and the history
of measurement in Australia
Includes a timeline and links to more specific topics (eg. Redefinition
of the metre).
Breath alcohol testing basics – Why breath alcohol analysis? (CMI, Inc, USA)
Briefly explains why measuring breath alcohol levels is a way of determining blood alcohol levels.
Evidential breath analysis in New South Wales: an exercise in pragmatism (Schaffer Library of Drug Policy, USA)
Covers the effect of blood alcohol levels on driving skills and explains how the results of breath tests can be used in court.
The history and development of speed camera use (Monash University Accident Research Centre, Australia)
A report that examines the controversies experienced in Australia, USA and UK in the history of speed cameras.
How Stuff Works (USA)
How radar works
Explains echo and Doppler shift and how radar uses these two phenomena.
How does a
laser speed gun work to measure a car's speed?
A non-technical explanation.
Page updated March 2007.