Vision ZerØ Open Data Explorer

In one year, Montgomery County averages over 20,000 car collisions with 400 resulting in serious injury and 35-40 fatalities. While Montgomery County has a lower traffic fatality rate than the US and Maryland, we believe that one death is one too many. To eliminate traffic fatalities from our roadways by 2030, the County has adopted Vision Zero. Learn more about the effort at
As part of our Vision Zero efforts, the County publishes its crash data via dataMontgomery. To help residents make use of this data, CountyStat has built out a series of data tools to allow anyone to see what the crash risks are across the county. Explore the data below.
Image of a car that was in a collision

Map of Fatal Crashes 2015 - Present

Map of fatal crashes occurring in Montgomery County as reported by Montgomery, Rockville, Gaithersburg, and M-NCPPC Park Police Departments. Data shown here may not match official reports due to validation done after initial report is submitted.

Serious and Fatal Pedestrian and Cyclist Collisions

Use the map and filters below to explore serious and fatal pedestrian and cyclist collisions occurring in the county. To see only pedestrians or cyclists, change the "Pedestrian Type" filter at the top. Hover your mouse over or click a collision to see more details.