Table 2.
Name, description and data source of variables
| Variable | Description | Data sources |
|---|---|---|
| Dependent variable | ||
| BCollision | Number of collisions involving bicycles happening on weekdays | Police collision databases in 2001, 2002, 2003, 2010, 2011 and 2012 by Hong Kong Police |
| Built environment independent variables | ||
| BDist | Cycling flow (bicycle distance travelled in bicycle-kilometre) | Travel Characteristics Surveys 2002 and 2011 by Transport Department |
| VehDist | Vehicle flow (vehicle distance travelled in millions vehicle-kilometre) | Traffic Census 2002 and 2011 by Transport Department |
| BTrack | Length of bicycle tracks (km) | Transport Department |
| ComArea | Commercial area (km2) | Land use paper maps 2002 and 2011 by Lands Department |
| ResArea | Residential area (km2) | Land use paper maps 2002 and 2011 by Lands Department |
| Road | Length of roads (km) | Node-link road systems 2004 and 2011 by Lands Department |
| JunDensity | Junction density (number of junctions per km) | Node-link road systems 2004 and 2011 by Lands Department |
| Demographic and socioeconomic independent variables | ||
| Population | Population (in thousands) | Population census 2001 and 2011 by Census and Statistics Department |
| pAge0_14 | Proportion of people aged between 0 and 14 | Population census 2001 and 2011 by Census and Statistics Department |
| pAge15_24 | Proportion of people aged between 15 and 24 | Population census 2001 and 2011 by Census and Statistics Department |
| pAge25_44 | Proportion of people aged between 25 and 44 | Population census 2001 and 2011 by Census and Statistics Department |
| pAge45_64 | Proportion of people aged between 45 and 64 | Population census 2001 and 2011 by Census and Statistics Department |
| pMale | Proportion of men | Population census 2001 and 2011 by Census and Statistics Department |
| MeEmIncome | Median employment income (in thousands) | Population census 2001 and 2011 by Census and Statistics Department |