How many kilometers is the speed limit of Changchun Ecological Street?

40 kilometers per hour. Official website of Changchun Public Security Bureau shows that the speed limit of Changchun Ecological Street is 40 kilometers per hour. Speed limit usually refers to the speed within a certain numerical range for a certain length and distance. The main purpose is to remind drivers to control the speed reasonably in advance to prevent the danger of speeding in the subsequent sections ahead.