Vision Zero Crash Records

The Boston Archive

Dataset

Vision Zero Crash Records

_Vision Zero Boston is our commitment to focus the city’s resources on proven strategies to eliminate fatal and serious traffic crashes in the city by 2030. We are inspired by the belief that even one fatality is too many. Learn more about about the Vision Zero Boston program at…

Dataset

Publisher: Vision Zero Boston
Spatial coverage: all
Fields: 10
Keywords: accidents, bikes, cars, crashes, injuries, pedestrians, safety, streets, traffic, vision zero
Publisher's page: https://data.boston.gov/dataset/vision-zero-crash-records

Artifacts

“Preserved” means the archive holds the bytes and their digest. “Referenced” means it holds the record of them and nothing more. The archive does not claim a holding it cannot prove.

Format	Preservation	Size	Digest	Source
CSV	preserved	6360895	`d7f9d41e981263b7a3acaadbcf28fb01cb140e21bf5a75208b70ccde678b54a0`	source

Column dictionary

The publisher's own dictionary, preserved verbatim. The archive does not reword a schema into its own vocabulary — how the publisher named a column is evidence about the publisher.

Column	Type	Description
`dispatch_ts`	text	Date and time of 911 emergency services dispatch
`mode_type`	text	Type of incident (ped = pedestrian; mv = motor vehicle; bike = bicyclist). Refers to the mode of transport for the most vulnerable individual involved. This means that crashes involving both cyclists and motor vehicles but not pedestrians are coded as cyclist crashes and all other combinations of modes are coded as pedestrian crashes.
`location_type`	text	Locations are coded as "street" if the reported location was on a City-owned street; "intersection" if the reported location was at the convergence of two or more streets; or "other" if the location was not on a City-owned street (i.e. on a highway / off-street bike path / bridge).
`street`	text	(if location_type = "Street") Name of city-owned street as reported in 911 system
`xstreet1`	text	(if location_type = "Street" or "Intersection") Name of 1st cross-street
`xstreet2`	text	(if location_type = "Street" or "Intersection") Name of 2nd cross-street
`x_cord`	text	X coordinate value of location in Massachusetts State Plane projection.
`y_cord`	text	Y coordinate value of location in Massachusetts State Plane projection.
`lat`	text	Latitude of location. This field represents a transformation of snapping the Y coordinate to the closest street as well as converting it into WGS84 projection.
`long`	text	Longitude of location. This field represents a transformation of snapping the X coordinate to the closest street as well as converting it into WGS84 projection.

The complete dictionary, exactly as the publisher words it, is served as its own holding at /asset/c6a991be385e27b8bd95123194fd3700/vision-zero-crash-records-columns.json — 2350 bytes, SHA-256 c6a991be385e27b8…, under Open Data Commons Public Domain Dedication and Licence (PDDL) 1.0.

Questions this record answers

Each answer is composed only from fields this record carries, and names the attestation for what it says. A question the record cannot answer from its own attested content is not asked here. Where a boundary is described as official it was promulgated by an authority with the power to draw it and is not amended by anything on the vernacular layer; where it is described as vernacular it is held by attestation alone and amends no official boundary.

Who publishes Vision Zero Crash Records, and under what license?

Vision Zero Boston publishes it. The archive accessioned it under Open Data Commons Public Domain Dedication and Licence (PDDL) 1.0 (public domain), and holds the publisher's own column dictionary verbatim rather than reworded into the archive's vocabulary — how a publisher names a column is evidence about the publisher.