Understanding the Modifiable Areal Unit Problem and Identifying Appropriate Spatial Units while Studying the Influence of the Built Environment on the Traffic System State
Table 2
Definition and calculation method of TSS indicators.
Variables
Definition
Calculation method
Traffic efficiency
Road speed
Where TTIi is the travel time index of grid i is the free-flow speed, is the actual speed of track point in grid i
Traffic safety
Number of traffic accidents
Total number of incidents per year
Traffic comfort
Comfort level while driving
The sum of uncomfortable track points, as defined in the literature [17]
