Impact and summative evaluation data
The National Data Fusion Unit is the main source of incident and train delay data.
It provides a combined data set, merging Safety Management Information System (SMIS) and Train Running Under System TOPS (TRUST) data into the FUSION database.
Data includes geographic locations and dates. The location data can be used to produce a before and after number of incidents.
If the intervention targeted a sub-set of incidents in an area, an option is to categorise incidents and only analyse those targeted by the intervention. Sub-categories may be, for example:
- By type of trespasser, such as children and young person trespass;
- By observable type of trespass, such as end of platform;
- By motivation, such as fare dodging.
Other data may be sought in order to help assess whether other factors influence the outcomes and impacts of an intervention. Some examples of open source data are:
- Office for National Statistics
- Changes in local population, such as a new housing estate or a new holiday park adjacent to a train line.
- Changes in local level of deprivation
- File 1. Indices of Multiple Deprivation. Office for National Statistics
- Local crime data
- Impact evaluation: case study Network Rail You vs train.