Report

From the Crash Dataset, it shows 1096

1. From Map 2, the location distribution of crashes for weekdays had certain concentration around major employment centers, such as Oakland, Northside, and also concentrated along some major commuting routes, such as Penn Ave from Lawrenceville to Downtown, Fifth and Forbes Ave in Shadyside and Oakland. It is more obvious from heat map below.

2. From two environment indicators of crashes, illumination and intersection, we can tell there are many area in the county need improvement to improve the visibility for drivers to see the cyclists. Or enforce cyclists to wear visual stimulating equipment, such as bike light or outfit. From map 4, we saw there are many concentrations in highly used commuter corridors. It indicates a urgent improvement for these areas.

3. Regarding the topography influence on crash distribution, from Map 8, the bicycle crashes mainly happened around flat areas in neighborhoods.

4. For total drivers' personal behavior related bicycle crash (327 crash in total) reflects a potential for law enforcement or education program to help change drivers behaviors on driving or sharing roads with cyclists. For the location distribution, alcohol related and speeding related were evenly distributed, however, aggressive driving has little concentration in Shadyside, Squirrel Hill and Northside. I think it could use some enforcement in these areas to protect cyclists and pedestrians, as the area has high concentration of student population.