1. CARLY S. QUEEN
GIS TRANSIT PLANNING TOOLS
CP 6521. ADVANCED GIS
PROFESSOR. MARTY SUNG
SCHOOL OF CITY AND REGIONAL PLANNING
GEORGIA INSTITUTE OF TECHNOLOGY
Transit Score Model
User inputs Data + Weights for:
Population
Employment
Poverty
Calculate Field  Densities
Spatial Join 3 Layers
Summary Statistics  Max. Densities
Normalize Data (Scale 0-1)
Apply Weights to Scaled Densities
Calculate Transit Score
Summary Statistics  Max. Score
Score as a Percent (Scale 0-100)
Transit Propensity Model
User inputs Data + Coefficients for:
Population
White Population
Education Jobs
Health Jobs
Poverty
Calculate Field  Densities
Spatial Join 3 Layers
Apply Coefficients to Densities
Negative Binomial Regression Model 
Estimate Transit Propensity (Usage)
Model vs. Actual Usage
User inputs Actual Usage Data for:
MARTA Bus Stops Shapefile
>0.5 miles from nearest Rail Station
Low (<10) Use Stops Excluded from
Actual Stop Usage Shapefile
Spatial Join with TransitPropensity.shp
Check Estimated against Actual Usage
Green dots with no Orange dots 
where model overpredicts stop usage
Continue to Enhance Model as Needed
Develop decision-support tools to aid in transit planning efforts.
Create simple GIS models to estimate area- and stop-level transit propensity.
Regression Betas
PopDens, WhiteDens
EduDens, HealthDens
PovDens Transit Propensity