Government proposals could also see speed limits on many rural roads in England cut from 60mph to 40mph. Roads affected could include those with a number of junctions, bends or barriers. You can read the draft guidance in full here.
More top news
Five people were killed and dozens more were injured after a car and knife attack in the capital on Wednesday afternoon.
Among those expected to attend the ceremony will be former US President Bill Clinton and ex-Northern Ireland first minister Peter Robinson.
Five people have been killed and 40 injured after a car and knife attack in London on Wednesday.