Nr Name  Maintainer  Link  Access  Description Relevance Relevance Comment Obstacles and Challenges
1 Mobilität in Deutschland (MiD 2023) BMDV, infas https://mobilitaet-in-deutschland.de Free and open (survey-based, data release pending) Nationwide study on mobility behavior in Germany Basis for traffic planning, emissions monitoring, and transport policy Provides useful mobility data including travel patterns, but limited direct relevance for detailed accident analysis. Data is aggregated, only download of PDF-formats, data release pending; unclear timeline may limit timely analysis
2 OpenStreetMap OpenStreetMap Foundation (crowdsourced) https://www.openstreetmap.org Free and open, data downloadable Crowdsourced spatial data worldwide (streets, routes) Base map for route planning, infrastructure analysis Crowdsourced map data may include infrastructure relevant to accident hotspots. Full map data available may be good as spatial base for accident mapping but requires merging with accident datasets; data quality varies; inconsistent tagging and completeness hamper accident studies.
3 Google Maps Mobility Reports Google https://www.google.com/covid19/mobility/ Free to access (aggregated) Reports on changes in mobility across categories during COVID-19 Used to analyze trends in public transport, retail, parks Trends in public transport mobility are only indirectly related to accident analysis. The data is outdated for current use
4 Strava Metro Strava https://metro.strava.com/ Application-based access, not publicly open Aggregated GPS data of cyclists and runners Useful for cycling infrastructure planning Although cycling and running data could help to identify accident-prone areas and cycling patterns, it is not directly relevant. Requires application-based access; limitations in coverage and high licensing fees possible.
5 DESTATIS Verkehrsdaten Statistisches Bundesamt https://www.destatis.de Free and open Traffic and transportation statistics in Germany Official source for transport volume, emissions General traffic volumes are important, dataset with specific accident details can be found CSV/Excel formats vary, monthly and annual accidents stats, city/reguinal data in structured tables; the data may require extensive cleaning and processing; it is not focused on accidents.
6 Eurostat Transport Eurostat https://ec.europa.eu/eurostat Free and open European mobility and transport datasets Cross-country comparisons, EU policy relevance European datasets might not have enough detailed information to fully study accidents, could only be useful for comparion but less granular for Hamburg. Data is aggregated and might require extra processing and harmonization, EU scope, not local.
7 Deutsche Bahn Open Data Deutsche Bahn https://data.deutschebahn.com/ Free and open Timetables, stations, occupancy data Real-world public transport data in Germany Useful for identifying passenger flows, but limited direct relevance to accident data; only rail-related May require joining with other datasets; limited detail on accident incidents.
8 Moovit Public Transit Index Moovit https://moovitapp.com/insights Free (aggregated, city-based) Urban mobility insights across major cities Access patterns and transit demand globally May indirectly show high-traffic areas, but lacks direct accident information. Aggregated data, no raw export available; may require additional local filtering; not accident-focused.
9 HERE Traffic Data HERE Technologies https://www.here.com/docs/ Commercial with trial options Real-time traffic congestion and routing data Traffic flow and bottleneck analysis Useful for identifying congestion hotspots, but may not link directly to accident reports. Commercial access; requires licensing and technical API setup; may require fees; full datasets behind paywalls; API usage may be limited; integration requires technical effort
10 TomTom Traffic Index TomTom https://www.tomtom.com/en_gb/traffic-index/ Free summary insights Congestion levels in 400+ cities Urban traffic trends, city performance ranking Can highlight congestion that may relate to accidents, but indirect relevance. Only summary data available, no raw accident data; detailed data likely behind paywall.
11 Air Mobility Initiative (AMI) Airbus, DLR, German government https://airmobilityinitiative.com Not public, project-based Developing eVTOL urban air mobility solutions Future of mobility infrastructure and innovation Not relevant for current road accident analysis as it focuses on future urbain air mobility solutions. Data not publicly available; project-based, restricted access.
12 Deutschlandticket (49€-Ticket) Usage Study Policy research institutions https://www.bmvi.de Published summaries Nationwide experiment on public transport subscription Impact analysis on behavior and emissions Provides insights into public transport usage, but not directly on accidents.  Summary data only, Data formats vary (PDFs, Excel), raw data may need request,  may lack detail on individual incidents.
13 Bundesverkehrswegeplan 2030 BMDV https://www.bvwp-projekte.de Free and open Planned infrastructure projects across all modes Future trends and prioritization of mobility investments Could provide context for accident risk in new infrastructure. Infrastructure plans available as PDF; No direct accident data; requires cross-referencing with other sources.
14 Hamburger Verkehrsverbund hvv https://www.hvv.de/de/ueber-uns/der-hvv/zahlen-daten-fakten Free and open Numbers, data and facts gives information about the company and its service and reliability Contains some data on traffic volumes, but little on accidents. Summary statistics only, the data is incomplete and may require significant cleaning.
15 Uber Blog Uber Technologies Inc. https://www.uber.com/en-DE/blog/kepler-data-visualization-traffic-safety/ Free and open, download of data via link, loading data via Kepler.gl data files containing street speed data, vehicle road crash data, and a fatal crash data managing traffic in cities and raising safety on the roads (particulary roads of Manhatten) through speed limits or traffic rerouting Could provide some accident insights, but data is limited in scope and geographic coverage, doesn't cover hamburg, but out of simillar traffic layouts, insights for traffic planning in Hamburg could be gained Download of data via link, loading data via Kepler.gl, the data may  require merging with other datasets for a comprehensive analysis.
16 Polizei Hamburg Verkehrssicherheitsbilanz  Polizei Hamburg https://www.hamburg.de/politik-und-verwaltung/behoerden/behoerde-fuer-inneres-und-sport/presseservice/pressemeldungen/verkehrssicherheitsbilanz-2024-1024790 Free and open Traffic safety reports over the years, including changes and updates regarding road safety understanding the development of road safety in Hamburg and evaluating if and how the conditions have improved over the years Provides accident insights, values and data on traffic accidents Provides helpful data in written form, values and figures must be manually extracted and own tables have to be created by comparing the different years
17 Twitter / X: Polizei Hamburg  Polizei Hamburg https://x.com/polizeihamburg?lang=de Public Notifications, alerts, and updated on Hamburg traffic informing followerd about updated on Hamburg's roads, including recent accidents, traffic advisories, and how traffic situations are developing Provides insights regarding Hamburg's roads and accidents Provides helpful data in written form, values and figures must be manually extracted and own tables have to be created 
18 Unfallatlas Deutschland Statistische Ämter des Bundes und der Länder https://unfallatlas.statistikportal.de/ Free and open, interactive Map displays injuries regarding persons resulting from traffic accidents in Germany, for more precise and detailed analysis, cities, towns and adresses can be entered Gaining an overview of persona injuries from traffic accidents in Germany by identifying areas with the highest concentrations of traffic personal injuries. This can also provide insight into which road locations are particularly dangerous. Provides values regarding personal injuries resulting out of traffic accidents in Germany, therefore allows describing overviews about partivularly dangerous areas Provides a lot of data and values in a map, data can be opened in table form and exported/printed as SVGZ, EPS, GIF, JPG, PDF, SVG and TIFF
19 FragDenStaat Open Knowledge Foundation Deutschland e.V. https://fragdenstaat.de/anfrage/geodaten-zu-verkehrsunfaellen-in-hamburg-im-jahre-2024/ via request Allows citizens to request official data unter German Freedom of Information laws, records typically include the date and time of the accidents, geographic coordinates of the accident site, accident type, involved vehicle and severity of injuries mapping of accident hotspots down to street segments or intersections, information on injury severity allows prioritization of safety interventions where the most serious accidents occur and vehicle and accident type classification influence future infrastructure planning Full geospatial analysis on Hamburg's traffic accidents CSV/GeoJSON data, however formal request might delay and charges might apply
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