Transit
Widely read by rail, light rail and bus operators, local and central governments, the city, consultants and suppliers, New Transit delivered comprehensive passenger transport news and comment.
TRANSIT CEASED PUBLICATION IN JUNE 2010

Regression to the mean falls as accident densities rise

Idris Francis
18 March 2016
The regression to the mean effect on accidents at camera sites varies according to accident density, says Idris Francis
The regression to the mean effect on accidents at camera sites varies according to accident density, says Idris Francis

 

I had hoped that my graphs and explanations of selection bias and regression to the mean (RTM) would by now have persuaded Dr Butchart that the effects are real and significant but as he seems determined to believe otherwise I must correct him once again. 

The DfT’s Road Safety Good Practice Guide does not state that, to use Richard’s words, “RTM is most acute at sites where there are extremely high numbers of accidents”. That error is his own. Instead it is clear...

+81% more

 

Healthy Streets Traffic Engineer Technical Lead x2
Bristol City Council
100 Temple Street Redcliffe Bristol BS1 6AN
BG13 £45,718 - £48,710
Healthy Streets Senior Traffic Engineer
Bristol City Council
100 Temple Street Redcliffe Bristol BS1 6AN
£37,336 to £39,186
Healthy Streets Senior Traffic Engineer
Bristol City Council
100 Temple Street Redcliffe Bristol BS1 6AN
£37,336 to £39,186
View all Vacancies
 
Search
 
 
 

TransportXtra is part of Landor LINKS

© 2024 TransportXtra | Landor LINKS Ltd | All Rights Reserved

Subscriptions, Magazines & Online Access Enquires
[Frequently Asked Questions]
Email: subs.ltt@landor.co.uk | Tel: +44 (0) 20 7091 7959

Shop & Accounts Enquires
Email: accounts@landor.co.uk | Tel: +44 (0) 20 7091 7855

Advertising Sales & Recruitment Enquires
Email: daniel@landor.co.uk | Tel: +44 (0) 20 7091 7861

Events & Conference Enquires
Email: conferences@landor.co.uk | Tel: +44 (0) 20 7091 7865

Press Releases & Editorial Enquires
Email: info@transportxtra.com | Tel: +44 (0) 20 7091 7875

Privacy Policy | Terms and Conditions | Advertise

Web design london by Brainiac Media 2020