Barter is the present and the future of international trade, especially for people who is starting in the import export business. Barter and more: Triangular operations.
The color symbol of traffic lights
Traffic lights consist of red, green, and yellow lights. A red light means no passage, a green light means passage is permitted, and a yellow light means a warning. Traffic signal lights are divided into: motor vehicle signal lights, non-motor vehicle signal lights, pedestrian crossing lights, direction indicator lights (arrow lights), lane lights, flashing warning lights, road and railway level crossing lights. A circle and a square are only different in shape, and the meaning of the color has not changed. When the green light is on, vehicles and pedestrians are allowed to pass, but turning vehicles are not allowed to obstruct the passage of straight vehicles and cleared pedestrians. When the yellow light is on, vehicles and pedestrians are not allowed to pass, but vehicles that have crossed the stop line and pedestrians who have entered the crosswalk can continue to pass. When the red light is on, vehicles and pedestrians are not allowed to pass.
