The StL Index is a normalized value derived from our underlying data sample. Our Normalization process differs slightly across our different data sources, but ultimately it accounts for variation in our sample across space and time, and allows for comparison of Metrics across Projects. So for example, if our sample size increased dramatically between the months of May and June, causing a spike in Trip Counts between the two months, the StL Index would account for that variation. StL Index values are comparable across Projects run in the same country and with the same data source.
Articles in this section
- What is the StL Index?
- What is the difference between the Origin-Destination Traffic Index and the various Zone Traffic Index values?
- How do I interpret trips with the same origin and destination?
- Why are the number of trips normalized on an index?
- How does the StL Index differ from the sample trip count?
- How do you normalize GPS data?
- How do you normalize LBS data?
- Can I compare or combine Personal and Commercial Index Values?
- Can I compare Bicycle, Pedestrian, and Vehicular Metrics to each other?
- Where can I find the Project Sample Size?