London is one of the most congested cities in the world, and on the most crowded streets, the speed is even below 12 mph. In the face of this situation, the London government began to charge congestion fees for motor vehicles. It costs ꠸ per vehicle. For the first time, the congestion in London streets has improved, but over time, the congestion has rebounded. Soon, the congestion has reached a maximum, and the speed of London driving can only be 8 mph. It turns out that before charging congestion fees, many private car owners felt that the city's congestion also had its own responsibility, and unconsciously produced a "guilt", thereby intentionally or unintentionally reducing the time spent driving. However, when they paid After the ꠸ congestion fee, I thought that I had paid the price for "mistakes", and that driving trips were straightforward and without guilt. In many cases, we always want the other person to pay for the mistakes made by others. But Sometimes, the best way is to tolerate or even "allow" his mistakes. Only in this way can he feel guilty, so that he can remember this mistake for a long time, and never make the same mistake. What does this text mainly explain? ['Only consider the rules.', 'The best way to face traffic congestion in London is tolerance.', 'Incomplete transport policy in London.', "People don't follow traffic rules."]