I thought it would be funny to look at one of the early 'justifications' for cameras. we can see they have failed in every possible way.
http://www.homeoffice.gov.uk/rds/prgpdf ... peeding%22
Here is some highlights:
- Avg cost of a camera were expected to be <12k per year - some forces now spend 100k
- No validation was done on the before an after data (p25)
- cameras were expected to reduce the cost of road accidents by 3/4bn per year - even using their numbers this was out by a factor of 10.
- the objective was to increase prosecutions and reduce police costs
- p45 questioned if drivers actually behaved differently but the perception was that they did so don't worry about the facts.
- they honestly expected fatalites to reduce by 1/3rd.
In fact almost every benefit has not been delivered - a commercial project that failed to deliver against its business case is usually scrapped.