Examining the Bus Ridership Demand: Application of Spatio-Temporal Panel Models
Table 2
Descriptive statistics of exogenous variables.
Variable name
Variable description
Minimum
Maximum
Mean
Stop-level attributes
Headway (min)
Ln (headway)
0.105
4.094
3.491
Transportation infrastructure around the stop
Bus route length in a 600 m buffer
Bus route length in kilometers (bus route length in 600 m buffer/10)
0.105
6.064
0.513
Side walk length in an 800 m buffer
Side walk length in kilometers
0.000
13.270
3.159
Secondary highway length in an 800 m buffer
Secondary highway length in 800 m buffer/total road length in 800 m buffer
0.000
1.000
0.339
Rail road length in an 800 m buffer
Rail road length in kilometers
0.000
6.038
0.307
Local road length in an 800 m buffer
Local road length in 800 m buffer/total road length in 800 m buffer
0.000
1.000
0.653
Presence of shelter in bus stop
(1 = yes and 0 = no)
0.000
1.000
0.227
Built environment around the bus stop
Land use mix area in an 800 m buffer
Land use mix = , where is the category of land use, is the proportion of the developed land area devoted to a specific land use, and is the number of land-use categories within 1 mile buffer of the roadway segment
0.001
0.810
0.501
Household (HH) density
HH density = HH size/census area/1000
0.005
3.718
0.476
Employment density
Employment density = employment/census area/1000
0.000
37.339
1.096
Central business district (CBD) distance
(Central business area distance in km from bus stop)/10
0.003
5.058
1.178
Sociodemographic and socioeconomic variables in census tract
Age 0 to 17 years
Ln (people age 0 to 17 years)/census area
−6.584
3.682
−0.282
Age 65 and up
Ln (people age 65 and up)/census area
−6.356
3.231
−1.067
High income (>80 k)
Ln (high-income people (>80 k)/census area)
−8.526
2.740
−1.827
Household rent
Ln (household rent/census area)
−7.210
3.978
−0.528
Spatial and spatiotemporal effect
Temporal lagged variable for boarding
Ln of temporal lagged variable for boarding
0.000
8.857
1.459
Temporal lagged variable for alighting
Ln of temporal lagged variable for alighting
0.000
8.820
1.490
Spatiotemporal lagged variable for boarding in an 800 m buffer
Ln of spatiotemporal lagged variable for boarding in an 800 m buffer
0.000
9.623
3.811
Spatiotemporal lagged variable for alighting in an 800 m buffer
Ln of spatiotemporal lagged variable for alighting in an 800 m buffer
