GIPOD is a service of the Flemish government giving open data of traffic works. This fulfils its claim of being GeoJSON.
$ npm install -g gipod-to-geojson $ gipod --type workassignment --query city=gent $ gipod -h
This will output the real GeoJSON in STDOUT and let you do whatever you want with it.
docs of this API: http://gipod.api.agiv.be/#!index.md