The government has spent €80m on soot filters for diesel lorries which barely work, the Volkskrant reports on Friday.

The paper says researchers at the TNO institute show that semi-open filters, which have been fitted to 8,000 lorries, only remove between 5% and 20% of the soot created during short, urban journeys.
On journeys of over three hours, the reduction is 40%.
Filters covered by government subsidies must reduce pollution by at least 50%.
The ministry has now stopped subsidising the fitting of semi-open filters but will continue to pay towards closed filters, which have a pollution reduction rate of 90%, the Volkskrant says.
The subsidy scheme was introduced in July 2006 after it emerged that the quality of the air in some parts of the country was so bad that no more building work could be permitted.