PASAR API

🇳🇱 NDW ~ national road-traffic open data

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Keyless DATEX II and REST feeds bundling traffic data from 19 road authorities.

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Call it

curl 'https://opendata.ndw.nu/'

AI prompt

I'm building an app using a free Netherlands API (no auth needed).

API: NDW ~ national road-traffic open data
Provider: NDW (Nationaal Dataportaal Wegverkeer)
Endpoint: GET https://opendata.ndw.nu/
It returns JSON.

Source: NDW (Nationaal Dataportaal Wegverkeer) (https://docs.ndw.nu/)
Source type: Official open-data catalogue
Endpoint type: Open-data catalogue JSON
Integration difficulty: Copy-paste ready
Last checked: 2026-07-05
Production caveat: Still handle empty rows, schema changes, pagination, stale coverage, and temporary upstream failures.

Help me fetch this and build a simple page that displays it nicely. Include basic production safeguards for errors, empty responses, schema changes, caching, and rate limits.

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