Signs are posted showing which direction the vehicles can move in: commonly an upward arrow, or on a T junction where … See more

One-way streets may be part of a one-way system, which facilitates a smoother flow of motor traffic through, for example, a city center grid; as in the case of Bangalore, India. This is achieved by arranging one-way street… See more

In the United States, 37 states and Puerto Rico allow left turns on red only if both the origin and destination streets are one way. See South Carolina law Section 56-5-970 C3, for example. Five other states – Alaska, Idaho… See more

An attempt was apparently made in 1617 to introduce one-way streets in alleys near the River Thames in London by The Worshipful Company of Carmen who were commissioned by the King to regulate traffic in the squa… See more

Sometimes one-way walking is specified for smooth pedestrian traffic flow, or in the case of entrance checks (such as ticket checks) and exit checks (e.g. the check-out in a shop). They may be outdoors (e.g. an extra exit of a … See more

• Circulation plan
• Glossary of road transport terms See more