Monthly journal Parking Review has been the definitive source of news and intelligence on the UK and international public and private parking sectors since 1989.

RTM only affects some camera sites – so how is it analysed?

Richard Butchart, Hitchin SG4
01 April 2016
 

I seem to have made myself popular in your correspondence columns by questioning the methodology and results that depend on Regression to the Mean (RTM) for safety camera casualty analysis (Letters LTT 18 Mar).

I read with particular interest the contribution from Professor Maher and I am glad that he raised the example of the GoSafe Welsh camera data. I was able to pick up the paper he wrote explaining his methodology and consider it at some length. In these comments, I leave aside the issue...

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Deputy Team Leader - Transport Planning
London Borough of Havering
Town Hall, Romford, Essex, RM1 3BB, GB
Grade 9 £51,093 - £55,155 pa
Deputy Team Leader - Transport Planning
London Borough of Havering
Town Hall, Romford, Essex, RM1 3BB, GB
Grade 9 £51,093 - £55,155 pa
Deputy Team Leader - Transport Planning
London Borough of Havering
Town Hall, Romford, Essex, RM1 3BB, GB
Grade 9 £51,093 - £55,155 pa
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