RTKLIB
Tomoji Takasu
Centimetre-level GNSS post-processing — open-source RTK and PPK.
Get it from the vendorTransportation engineering is covered here mainly by online tools from US agencies: pavement structure design in asphalt and concrete, speed limit setting by a documented methodology, and coordinate conversion for field work.
Alongside them are traffic and transport system simulators that let you test signals, junctions and demand scenarios before changing anything on the ground. These originate in research but are used in practice for traffic planning.
As elsewhere on this site, the design methods and data are American. They are excellent for learning the method and estimating magnitude, and require adaptation to local standards before use in an approved design.
39 results
SUMO
German Aerospace Center (DLR) / Eclipse
Microscopic traffic simulation — every vehicle modelled individually on a real road network.
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SurveyTools (incl. Alignment Solver)
SurveyTools (open-source project)
Surveying toolkit: network adjustment, road and rail alignment solving, coordinate transforms and levelling.
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UXsim
Toru Seo (Institute of Science Tokyo)
Open-source Python simulator of network traffic flow, macroscopic and mesoscopic, with traffic signals, dynamic assignment and OpenStreetMap import.
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Vadere
Munich University of Applied Sciences (Vadere research group)
Open-source framework for pedestrian and crowd simulation: movement in stations, events and evacuation, with several locomotion models.
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AUSPOS
Geoscience Australia
Free online service for precise processing of static GPS files from anywhere on Earth, with an emailed ITRF coordinate report.
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BridgeLink (PGSuper, PGSplice)
Washington State Department of Transportation (WSDOT)
WSDOT’s bridge suite: design, analysis and load rating of precast pretensioned and spliced bridge girders, with source code available.
Get it from the vendorCopernicus Browser
European Commission, Copernicus Data Space Ecosystem
Web browser for viewing, analysing and downloading Sentinel and Landsat satellite imagery: indices such as NDVI, date comparison, time series and measurements.
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FAARFIELD — Airport Pavement Design
FAA (Federal Aviation Administration)
The FAA’s official thickness-design program for asphalt and concrete airport pavements.
Get it from the vendorGeoNode
GeoNode Project (OSGeo)
A web platform for building an organisational spatial data infrastructure: upload, style, share and publish layers and maps.
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GRAL (Graz Lagrangian Model)
Graz University of Technology
Lagrangian air pollution dispersion model for urban areas and complex terrain, including low wind, building effects, stacks and tunnel portals.
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OpenTripPlanner
OpenTripPlanner Project
A multimodal routing engine — journey planning and public transport accessibility analysis.
Get it from the vendorpgRouting
pgRouting Project (OSGeo)
An extension to PostGIS and PostgreSQL for routing and shortest-path calculations on road and infrastructure networks.
Get it from the vendorPostGIS
PostGIS Project Steering Committee (OSGeo)
An extension to the PostgreSQL database that adds storage, indexing and analysis of geospatial data through SQL queries.
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SNAP-2 (Soil Nail Analysis Program)
Federal Highway Administration (FHWA)
FHWA's soil nail wall design program – nails, facing, internal and external stability and global slope stability in a single package.
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