The pros and cons of Intelligent Speed Adaptation as a restrictive measure for serious speed offenders

Can cars and trucks coexist peacefully on highways? Analyzing the effectiveness of road safety policies in Europe

“…The initial EU legislation requiring SLs to apply a 90 km/h limit to improve safety and reduce environmental effects was adopted in 1992 (Directive 1992/6/EEC) for large commercial vehicles over 12 t, and extended in 2002 (Directive 2002/85/EC) to smaller commercial vehicles over 3.5 t and to all buses with more than nine seats. Despite their drawbacks (see Van der Pas et al, 2014), the extension of this compulsory measure to light There is little empirical literature that assesses the effectiveness of SLs for the traffic safety of trucks in Europe compared to studies in the U.S. (Bishop et al, 2008;Hickman et al, 2012). E.g., for the case of the United Kingdom, Transport Canada (2008) concluded that there had been a 26% drop in the accident involvement rate for speedlimited heavy trucks during the 1993-2005 period; a meta-analysis by Elvik et al (1997) estimated that installing SLs in heavy goods vehicles could contribute to a 2% reduction in all crashes with injuries; and a recent ex-post evaluation published by the European Commission (2013b) on the installation and use of speed limitation devices reveals that the application of SLs (plus a voluntary ISA system) would lead to an approximately 25% reduction in the number of fatal accidents on European roads involving large and light commercial vehicles (600 fewer fatalities annually), whilst decreasing speed limits for large trucks to 80 km/h would lead to an approximately 5% reduction in fatal accidents.…”

Incorporating car owner preferences for the introduction of economic incentives for speed limit enforcement

“…Implementing CVS via PAYS is relatively similar to ISA related studies except in two cases, one that the CVS is able to communicate between cars which can't be done in ISA and the other that CVS could have larger and longer term effect on driver's speed by getting tickets from police, compared to ISA. ISA is a smart system that improves driver compliance with the location specific legal speed limits (Sayed, Delaigue, Blum, Mortazavi, & Eskandarian, 2007, Van der Pas et al, 2014b, and can be considered as a solution to the problem of inappropriate speed (Van der Pas et al, 2014b). Many experimental and field studies show that ISA reduces driving speeds and improves safety (Lahrmann et al, 2012, Van der Pas et al, 2014b, Van der Pas et al, 2014a.…”

“…ISA is a smart system that improves driver compliance with the location specific legal speed limits (Sayed, Delaigue, Blum, Mortazavi, & Eskandarian, 2007, Van der Pas et al, 2014b, and can be considered as a solution to the problem of inappropriate speed (Van der Pas et al, 2014b). Many experimental and field studies show that ISA reduces driving speeds and improves safety (Lahrmann et al, 2012, Van der Pas et al, 2014b, Van der Pas et al, 2014a. In line with these studies, PAYS field tests could be an interesting area of future research in itself, and such studies can also be used to validate our stated preference study.…”