Alternative speeding KPIs.

Abstract

The specific document concerns the collection of alternative speeding indicators that will serve as complimentary indicators to the basic KPI Speed. For the KPI Speed the minimum requirement is to estimate the percentage of vehicles travelling within the speed limit. Besides this indicator, it is needed to also measure the speed below which 85% of drivers are driving (V85), and the average speed (including standard error and standard deviation). Complementary to these KPIs for speed, alternative speeding indicators will be calculated within Trendline, initially at a small scale. This document describes the minimum methodological requirements to qualify for an Alternative Speeding Indicator, defined as the “Percentage of vehicles travelling 10km/h or 20km/h or 30km/h faster than the speed limit”, in other words, the percentage of vehicles overspeeding by less than or equal to 10km/h, 20km/h or 30km/h.