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Complete PICLE corpus of essays by Polish advanced EFL students (330,000)

/^t/The first problem I would like to focus on is the air pollution. Some years ago it was almost impossible to breathe in the center of my hometown. Poznan if famous for the highest number of cars per person in Poland. Since the local authorities introduced the so-called "Blue Zone", life has become much easier for an every inhabitant. It doesn't mean that the number of cars in Poznan has decreased. But in order to stop in the center of the city, drivers are required to purchase special tickets allowing them to do so. Any car without such a ticket placed on a windshield is towed away or immobilized so that a driver has to pay fine before taking his/her car back. This regulation was enacted to discourage people from going to the center by car and to reduce the traffic. This system has undoubtedly has proved to be successful. Another regulation that has been introduced lately, this time all over Europe, requires every new car to have a catalyzer installed. Such an equipped car uses up a lead-free petrol which is environmently friendly. The ultimate goal is to install a catalyzer to every car to reduce the emission of the pernicious pollutant to minimum. In addition, special roads for cyclists are built so that people can ride a bicycle instead of going by car.