A one way street only allows vehicles to move in one direction down the road. ‘No-entry’ signs are used to prevent vehicles travelling the wrong way along the road, and sometimes road junctions are redesigned to make it difficult to turn against the flow of traffic. For traffic travelling in the correct direction, arrow signs are used to show it is a one way street.
Effectiveness
If a road is currently a narrow two way street where motor vehicles need to slow down to pass each other, changing the road to a one way street will increase vehicle speeds. Vehicle drivers may also be tempted to drive faster because they do not expect any oncoming vehicles.
If motor vehicles speeds increase, this will reduce how safe the road is.
Advantages of a one way street
- Can prevent vehicles using the road as a short cut
- Can create more road space for car and cycle parking
- Can create more space for widening footways/cycleways
- Can help traffic to move more freely
Disadvantages of a one way street
- Likely to increase vehicle speeds
- Motor vehicles and emergency vehicles may need to travel greater distance to get to their destination
One way exceptions
Many one way streets in Cambridge have an exception for bicycles, this is also known as a cycle contraflow. This keeps the city accessible to cyclists, who may find journeys longer and more difficult with an increasing number of one way streets.
Restrictions
- Only usually used on local residential roads, where an alternative major route is available.
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For some roads, they will be too important to the Cambridge’s transport network to allow them to become a one way street.
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This scheme requires a Traffic Regulation Order and a Road Safety Audit
Cost of installation
The one-way street cost is based on two new illuminated signs plus the electrical connections, installed under two-way lights.