Dachlast/dachlast-open-data

German Roof-Mounted Equipment Market: Tents, Boxes, Racks, Awnings

Four datasets covering the German/DACH market for roof-mounted vehicle equipment, collected from official manufacturer product pages — the source URL is included in every single row, so every value can be verified.

• dachzelte.csv — 646 roof tents from 107 brands
• dachboxen.csv — 157 roof boxes from 19 brands
• dachtraeger.csv — 191 roof rack systems from 58 manufacturers
• markisen.csv — 272 vehicle awning size variants from 39 manufacturers

Canonical source & field documentation: https://dachlast.de/daten/ DOI (citable, always latest version): https://doi.org/10.5281/zenodo.21798284 GitHub: https://github.com/DACHLAST/open-data · Methodology: https://dachlast.de/methodik.html

Why this data exists

Two numbers drive every roof-tent or roof-box purchase, and manufacturers publish neither in comparable form:

1. Packed height (packhoehe_cm) of a roof tent. It determines aerodynamic drag and therefore fuel consumption — on flat roads, 95–98 % of the extra consumption comes from air resistance, not weight.
2. Total weight on the roof. Rack + tent/box + awning must stay below the vehicle's permissible roof load, typically 50–100 kg for passenger cars.

What makes it unusual

Gaps are documented, not guessed. An empty cell means the manufacturer does not publish the value. Nothing is interpolated or copied from another size variant.

For roof racks, the gap itself is a finding. 132 of 191 racks have a manufacturer load rating; for the other 59, the traglast_notiz column explains why not — brands like Rhino-Rack, Front Runner, Upracks and horntools deliberately publish no system load rating and refer to the vehicle's roof load instead. Four manufacturers rate load per crossbar; those values sit in a separate column so nobody mistakes them for system ratings.

For awnings, montagebasis answers the question nobody else answers: does the awning mount on the roof (counts against roof load — 150 of 272 variants), on the side wall (73) or in the keder rail (49)? Wall and keder loads don't touch the roof budget.

Language note

Column headers and categorical values are German (source market). Key terms: marke/hersteller = brand/manufacturer · gewicht_kg = weight · packhoehe_cm = packed height · liege_l_cm/liege_b_cm = sleeping area length/width · hartschale = hard shell · softshell = soft shell · traglast_dyn_kg = dynamic load rating while driving · traglast_stat_kg = static load rating (parked, e.g. sleeping) · eigengewicht_kg = dead weight · laenge_cm/auslage_cm = length/projection · montagebasis = mounting base (dach = roof, wand = wall, kederschiene = keder rail) · quelle = source URL · zaehlt_zur_dachlast = counts against roof load.

Full field documentation (German): https://dachlast.de/daten/

Ideas for analysis

Flattest tents ranking (packed height ≈ fuel cost) · hard-shell vs. soft-shell weight/area trade-off · price per kg of rack load rating · remaining luggage budget after rack + tent per vehicle class · which manufacturers publish load ratings at all (traglast_notiz makes industry transparency itself measurable).

License & citation

CC BY 4.0 — any use including commercial, attribution required:

Data source: dachlast.de – https://dachlast.de/daten/ (CC BY 4.0)

Academic citation: dachlast.de (2026): Dachlast Open Data. Zenodo. https://doi.org/10.5281/zenodo.21798284

No warranty; the manufacturer's official documentation is binding. The awning→vehicle-class mapping is our editorial assessment based on length, type and mounting base — not a manufacturer approval.