But government officials and environmentalists say the permit system has been deeply corrupted.

Stretton also regulated access to the city by means of a permit system.

Between 1600 and 1635, more than 350 Japanese ships went overseas under this permit system.

Under the current permit system, owners are issued licenses for life.

A permit system restricted movement and work opportunities for many Aboriginal people.

Meanwhile, the government may introduce a permit system, such as Switzerland already uses.

This allows growers to sell wheat to anyone they chose under a permit system.

So a permit system was introduced stating where and when boats are allowed to fish.

They added, though, that over time the permit system would allow the federal agency to require reductions in emissions if the air quality remained poor.

It also proposes a permit system to control the number of back-country visitors each day.