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GIS- Geographic Information Systems
GIS- Geographic Information Systems
GIS is a tool used to map and analyze spatial data. It’s useful for visualizing truck traffic because it can show where the busiest routes are and how they intersect with residential areas, schools, or medical facilities.
This makes it easier to understand the environmental and health impacts on nearby communities.
We use ArcGIS to develop graphics to help us develop a deeper understanding of how the Stockton Community is impacted by the Crosstown freeway and diesel truck emissions.
Map of Schools and Medical Facilities near the Crosstown Freeway
Most of these facilities are infant and elderly centers.
Stockton is in the 99th Percentile for pollution & exhibits high population vulnerability.
The size of each bubble on the map shows the volume of truck traffic, while the color intensity shows the percentage of trucks out of total vehicles. Larger, darker bubbles near the Port of Stockton highlight areas with both high truck counts and concentration. Some roads see over 40,000 trucks daily, and in several areas, trucks make up more than 20% of total traffic.
Stockton Tract ranks in the 99th percentile for pollution burden and population vulnerability based on its CalEnviroScreen (CES) score, which means it is one of the highest overall environmental health risks in the state. Compared to the rest of California, we observe:
Highest levels of pollution
Highly vulnerable due to health, income, education, and language barriers
Home to a largely Hispanic and Asian population, with many young children
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