Holland's answer is to chase such ladies out of the downtown areas and into a Tippelzone, a specially designed streetwalkers' park. One such park is in an industrial suburb of Amsterdam. The cars pass through steel gates and trawl around the fenced-in loop of a track. About 70 prostitutes stand under bus stop shelters dotted along the track every few meters. Four policemen watch from the side, keeping order.
Business is brisk.
An Alfa Romeo stops, and a woman in thigh-high boots and a thong under a lambskin jacket jumps into the car. The car continues a few more meters, then branches off to a double row of steel boxes resembling horse stalls. When they finish, condoms are disposed of in handy stallside bins, and the car continues along the track out of the park. At 6 a.m., when the park closes, cleaners come to empty out the bins. They can also buy condoms and meet the state-provided doctor and social worker.