When was the first speed limit posted?

The first recorded speed limit was established in the United Kingdom in 1865, when the Locomotive Act set a maximum speed of 4 miles per hour for motor vehicles on public roads. This law aimed to control the increasing number of motor vehicles and ensure safety. In the United States, the first speed limit was enacted in 1901 in Connecticut, setting a limit of 12 miles per hour in cities and 15 miles per hour outside of them.