Amsterdam takes away around 350 bicycles every day, and one of the reasons is the rule that a bike may not stay in the same spot for more than six weeks.
The rule divides opinion, although some residents can see why it is needed.
AT5 joined enforcement officers for a morning in De Pijp, one of the neighbourhoods where parked bikes cause the most trouble.
Kees, an enforcer who also supervises a team, said that bikes and cars are what dominate the streets there.
His team had already been along part of Van Ostadestraat, he said, yet it was still full of bikes.
Officers first mark a parked bike, and after six weeks they stick a label on it.
If the mark is still there after that, the bike is taken, since Kees said six weeks without use is the limit.
One cargo bike with three flat tyres had been standing still for well over two months, according to Kees.
Its owner rushed outside when he spotted the officers, insisting the bike had not been there that long and that only one tyre was flat.
If your own bike has a flat tyre or two, find a bike repair spot in your neighbourhood.