Starting a discussion thread for sharing relevant precedent or existing project work that might help inform this effort. Share any existing specifications, data, maps/tools, use case documentation, etc. here!

[SLarrick]

In Massachusetts the various MA Regional Planning Agencies have been working together with the MA Department of Recreation and Conservations's MassTrails team and MassDOT's Bike/Ped team to aggregate trails data across the state and transform/standardize that data. We are still in the early stages of work, but here are some relevant materials from that effort:

• Project Overview deck
• Priority Use Cases (slide deck | spreadsheet)
• V1 Data Standard Documentation

[elipousson]

The Baltimore Regional Transportation Board's Bicycle and Pedestrian Advisory Group recently completed an update to the schema they use for a shared resource on regional bike facility data.

The Regional Bicycle Facility Inventory Update Presentation has more details and I set up a rough Google Sheet that shows the facility types and sub-types including an (incomplete) attempt to map the sub-types onto equivalent tag-value pairs found in OpenStreetMap data.

I don't know if requests are encouraged in this thread but I'm looking for examples of granular data (both spatially and temporally) on traffic calming infrastructure installations, e.g. bump-outs, re-striping, changes to turn lanes, etc.

[RyanWestrom]

Some folks might find this OSM pedestrian infrastructure density visualization interesting: https://mvexel.prose.sh/20230428-osm-pedestrian-quality-analysis-qgis

[Bikingman]

NCDOT has setup an good platform to collect information on bicycle networks from municipalities throughout the state.

From their website, "The Pedestrian and Bicycle Infrastructure Network (PBIN) is a geodatabase that includes data on existing and proposed bicycle and pedestrian facilities throughout North Carolina." In 2016, NCDOT published details in a data catalog on the PBIN geodatabase structure that offer a description of the attributes, data type, and other relevant information about the project. My understanding is that this is an ongoing effort, continuously updating the PBIN as new pedestrian and bicycle network information from municipalities becomes available.

The NCDOT PBIN separates assets into three categories - bicycle, pedestrian, and shared-use assets, and handles both existing and proposed facilities. The geodatabase data catalog describes which fields are related to grant applications, and other guidelines are provided for focus area and corridor locations. A template geodatabase can be found on the first link provided above.

[DavidHampsten]

When I worked for the City of Portland (Oregon) Bureau of Transportation (PBOT) 2000-2006 I was part of a team of staff and interns mapping "street assets" such as curbs, sidewalks, signage, bike racks, etc. in utter detail, including materials, condition, what original plans they were drawn from (some as far back as the 1880s but most were post-1920), in vector format in Microstation MGE and later shape files in ArcMap and ArcGIS.

We would also work on centerline files. Periodically we had working meetings with other jurisdictions including Seattle, Victoria BC, Eugene OR, etc. about their efforts.

Since 2015 I've been living in Greensboro North Carolina and have noticed that cities out here also map such assets.

Links to the public online Portland city files: https://gis-pdx.opendata.arcgis.com/search?type=feature%2520layer

[RyanWestrom]

I would commend to the members of this group the Gemini Principles (https://www.cdbb.cam.ac.uk/DFTG/GeminiPrinciples). These principles were developed in Britain to help guide their development of a national digital twin and for the associated information management frameworks. I think they represent good thinking and they seem relevant to our own conversations. As such, there could be some principles worth emulating in our own formational work. Specifically, these principles detail that "all digital twins must have clear purpose, must be trustworthy and must function effectively."

[ssmith55]

Over the past few years, we have been developing the General Modeling Network Specification. This is a spec for 2-dimensional routable networks, intended for data exchange among models of varying resolutions. Among other things, it provides an option for representing pedestrian facilities as either attributes on the street network, as well as their own links on a street and pedestrian network (a question that came up at the 5/30 NC-BPAID meeting)

[TCAT-UW]

Hi. We have been developing the OpenSidewalks data schema for accessible pedestrian network data, and are adding the bike data to the spec for the next version.

Also, please note the new thread by USDOT linked here #13 pertaining to data schemas and standards.

[philipcliang]

Based on this document some data types of interest are crash data and motor vehicle data. FARS is a nationwide census of fatal traffic crashes available here. Under Filter Your Selection, First Harmful Event (FHE), the crashes can be filtered to the type of interest (filters for nonmotorist crashes are available under FHE: Collision with Object Not Fixed). TIMS is available here and contains data on fatal and injury in California. Cyclist and pedestrian crashes can be identified via the "Motor Vehicle Involved With" variable.

Motor vehicle traffic data and infrastructure data is also of interest. The HPMS has data for some roads here. Data of interest include average daily traffic, the speed limit, functional class, number of motor vehicle lanes, lane width. Not every data element is available for every road. An alternative link in case the main link is broken is here, but the traffic data is 2 years older. Using the right bar, filters can be used to select roads for which the data element(s) of interest are available.