Speed Limit Compliance Index (SLCI): A Conceptual Method to Enhance the Efficiency of the Advisory Intelligent Speed Adaptation System

Table 1

The summary results of the recent advisory trial study in some countries with incentives.

Location	Year of study	Light vehicles	Heavy vehicles	Speed zones (km/h)	Change in mean speed (km/h)	Change in 85^th% speed	Reference
Borlänge, Sweden	2002	90	None	30–110	—	—	Lindberg [42]; Hultkrantz and Lindberg [46]
Denmark	2007	26	None	50–130	−0.8 to −6.2	—	Agerholm et al. [43]
Denmark	2008	153	Unknown	50–130	−3.6	−3.5 to −8.5	Lahrmann et al. [44]