טכניון מכון טכנולוגי לישראל
הטכניון מכון טכנולוגי לישראל - בית הספר ללימודי מוסמכים  
M.Sc Thesis
M.Sc StudentHayim Felba
SubjectInvestigation of Drivers' Preferences and Opinions about
the Use of Intelligent Speed Adaptation Systems
DepartmentDepartment of Civil and Environmental Engineering
Supervisor Full Professor Bekhor Shlomo
Full Thesis textFull thesis text - English Version


Abstract

Intelligent Speed Adaptation (ISA) is a system which uses information and communications technologies to provide speed limit information on a vehicle’s dashboard. The ISA system uses digital road maps as in navigation systems, but with the important difference that it also contains speed limit data for every road. When the map is combined with current position information from a GPS (Global Positioning System) receiver, the system compares the current speed with the speed limit. In advisory ISA, the speed limit flashes and warns the driver if the vehicle is being driven above the speed limit. The same information can be linked to the vehicle’s engine management system to provide an intervening ISA. This can take two forms: voluntary ISA or supportive ISA.


This paper presents analyzes the potential uptake of ISA devices. The analysis makes use of two approaches, based on respondents’ stated preference between the two systems in various settings, as well as their stated buying intentions in these settings.


Literature indicates that ISA can be an efficient and effective way to reduce speed and speeding. Different methods and theories were used to distil the most relevant determinants that could influence acceptability of ISA systems. Based on these determinants a web-survey was held, with a total of 859 participants, 88% from Israel and 12% from abroad. The respondents indicated that their own driving behaviour is of great influence on accidents and traffic safety, instead of infrastructure or other drivers. Overall, 67% of the respondents are in favour of ISA. Half of the drivers want to have a voluntary ISA system and 33% of them do not want any ISA system in their vehicles. Almost two out of ten drivers wanted to go even further and choose to have a supportive ISA.  It is observed that the general opinion of Israeli drivers about using supportive ISA is different from the other countries that they do not prefer to use it.


While the analysis shows that a non-negligible part of the sample population have a strong opposition to accept any ISA system, there is also a large part of the population that, if given the right incentives, would be willing or even keen to equip their vehicle with an ISA device.