小庞同学

The earliest city roads were designed for horses, carriages, and pedestrians. So when loud, fast, self-propelled vehicles first appeared, they were widely seen as dangerous machines that did not belong on ordinary roads.
In 1865, Britain introduced the Locomotives Act, later commonly associated with the “Red Flag Act.” Under these rules, a motor vehicle had to be operated by at least three people. One of them had to walk ahead of the vehicle, carrying a red flag to warn others. In towns, the speed limit was only 2 mph.
In other words, the machine was forced to move at roughly human walking spe

The original city roads were designed for carriages and pedestrians. Therefore, motor vehicles that were generally thought to be too dangerous—going too fast and making too much noise.
In 1856, Britain introduced the “Locomotives Act,” commonly known as the Red Flag Act. Under it, when a motor vehicle was in operation, at least three people were required: one had to walk in front of the vehicle with a red flag in hand to warn others, and speed in towns was limited to 2 mph. By comparison, the default walking speed on all our maps today is 3 kilometers per hour.
Stablecoins are a bit like that

Transportation, dining, and massage prices in Hanoi are really cheap, but the gym in the tourist area has a low cost-performance ratio. The day pass costs $13, and the equipment is seriously incomplete.