Twelfth of July parades are due to be held across Northern Ireland today.
First and Deputy First MInisters Arlene Foster and Martin McGuinness have called for any protests to be carried out in a peaceful way.
Road closures and traffic delays can be expected this morning as feeder parades take place ahead of the main demonstrations, and again this evening as lodges make their way home.
The main demonstration in the Derry and Strabane District is taking place in Newtownstewart.
There are also major parades in Aughnacloy, Limavady and Castledawson.