thomas jaehrig
13 May 2009
information and detailed descriptions are coming soon....
28 June 2009
Dear visitor,
Welcome on my webpage in the frame of the ShLOW project conducted by the ETSC.
My name is Thomas Jährig and I have been working as a research assistant at the Technische Universität Dresden, Germany since Mai 2006.
Attachments
28 June 2009
Currently I am working on my PhD thesis. The topic of my thesis is dealing with the improvement of road safety on rural roads in Germany.
My ShLOW project builds up on a research project (“AOSI”, see www.bast.de) which was running at our chair and finished end of 2007.
In order to improve road safety in the short- up to medium-term, one part of the project focussed on the enforcement of speed limits. On five test tracks in Germany with a very high number of severe accidents caused by speeding, speed cameras were installed in distances from 500 m to up to 2500 m.
Attachments
28 June 2009
The impact of speed enforcement on accident frequency and severity was very positive. Accidents with serious injuries could be reduced between 7 and 50 % within 3 years. Especially serious injury single vehicle accidents caused by speeding could be reduced. Corresponding to this the average speed on each test section decreased to the speed limit level on the camera enforced cross sections and could be reduced significantly in the sections in between.
After the research period ended in December 2007 the local road authority removed the speed cameras on one of five test tracks completely.
Now I have been investigating the accident frequency and severity after the cameras were removed and deduce recommendations from the result.
A positive result will be a remain constant or decrease number of accidents on this road section. This will happen if car drivers learned to drive carefully during the past 3 years of speed enforcement.
Then the results will be used to make recommendations to other road authorities as an appropriate tool to use beaded positioned speed cameras to improve accident frequency and severity caused by speeding over a certain road section.
The problem will be to convince the authorities to spend money for the implementation of speed cameras on hazardous road sections to and save lives and not to increase revenues.
Average speed control devices as deployed in Austria or in the UK are not allowed in Germany today because of the protection of privacy and the system would be more useful on motorways with long distances without exits (tunnels, road work sections).
28 June 2009
The background and the project idea was submitted to my national contact person Ms. Lacroix on June 14, 2009.
29 June 2009
Contact to police station of road accidents successfully established. The police station is collecting, preparing and delivering the accident data of my test track which were happened during the past 2 years. After that it is possible to evaluate the data and draw first developments.