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This Is the Tool You Need to Push for Safer Streets in Your Part of NYC

12:58 PM EST on March 2, 2018

CHEKPEDS has upgraded its crash data map in a big way, giving New Yorkers a powerful tool to push for street safety improvements where they live and work.

When CHEKPEDS introduced Crash Mapper a year ago, it was already an improvement over City Hall's Vision Zero View. Crash Mapper uses the same data as the city map, but the public can do a lot more with it.

Let's start with the basics. When you click on an intersection with a history of crashes, Vision Zero View can only show you the number of victims at that location during a particular month or year. It takes additional steps to determine whether victims were walking or biking, or were in a motor vehicle, and users have to toggle between injury and fatality data.

Crash Mapper lets the user define the time frame and with one click shows the total number of fatal and injury crashes for a given intersection, sorted by mode of travel.

The Crash Mapper reboot was developed in conjunction with Greeninfo Network and CARTO with funding help from Manhattan Borough President Gale Brewer and the City Council speaker's office. Like before, it allows users to draw custom areas on the map and analyze those sections using any of the data sorting functions. Among the upgrades: the map now creates unique URLs so search scenarios can be preserved. You can outline an area to compare crash stats before and after a specific street improvement, like a bike lane, and easily show the results to other people.

Data can also be filtered and compared by borough, community board, council district, police precinct, neighborhood, and intersection. With the expanded functionality, you can view data trends in, say, your community district side by side with the borough as a whole, for a time period of your choosing.

Trend lines for pedestrian injuries in City Council District 1 (orange line) and citywide (green line) from January 2014 to January 2017.
Trend lines for pedestrian injuries in City Council District 1 (orange line) and citywide (green line) from January 2014 to January 2017.

Crash Mapper can rank dangerous intersections within a given area in real-time. Are the corridors prioritized for safety fixes in DOT's 2015 borough pedestrian safety action plans still the most dangerous? What are the most crash-prone intersections in your local police precinct? Want to know if that bike lane mixing zone is a hot spot for collisions? Crash Mapper can answer those questions and give you the data you need to press officials to take action.

“With a few clicks, makes available to all -- activists, press, elected officials, agencies, police precincts, community boards, and business improvement districts -- the information necessary to evaluate in minutes instead of days the safety of our streets, and request remedies accordingly,“ said CHEKPEDS in a statement.

The Crash Mapper “help” page features video tutorials on how to get the most out of the map. We're still playing around with it, but there's no doubt it will inform Streetsblog coverage of crashes and the movement for safer NYC streets.

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