First 20mph zone to be rolled out in Edinburgh city centre
The phased scheme aims to improve safety and promote walking and cycling.
The first phase of a new 20mph speed limit in Edinburgh will be rolled out this weekend.
Drivers in the city centre and rural areas in the west of the city will have to heed the reduction from Sunday as part of a council drive to improve safety and boost walking and cycling.
The new speed limit will be phased in to another six traffic zones over the next 18 months, making Edinburgh Scotland's first 20mph city.
By January 2018, around 80% of Edinburgh streets will have a limit of 20mph, while some arterial routes will keep their 30mph and 40mph status.
It is hoped the move will create a more "people-friendly" environment in the area's shopping and residential streets.
City transport leader Lesley Hinds said slower speeds would also promote active travel and reduce the risk and severity of road collisions.
She added: "The majority of Edinburgh residents support our 20mph scheme and we know that other local authorities in the rest of Scotland are closely monitoring our experience."
Chief Inspector Mark Rennie of Police Scotland said his officers would "respond appropriately" to any breaches of the new limit.
He added: "Changes to road layouts, proper signage and continued engagement with the public are the keys to ensuring the speed limit is adhered to, however, police will give due attention to areas around schools to ensure public safety."