Following the reorganisation of local government in April 1996, "premium" and "all purpose" management units were set up to manage certain routes on the Scottish trunk road network. The following lists Councils with a presence within the units. Councils may appear within more than one unit.

1. PREMIUM UNITS

1.1 Clyde Unit

East Ayrshire Council
East Renfrewshire Council
Glasgow City Council
Inverclyde Council
North Lanarkshire Council
Renfrewshire Council
South Ayrshire Council
South Lanarkshire Council
West Dunbartonshire Council

1.2 Tay Unit

Aberdeen City Council
Aberdeenshire Council
Angus Council
Dundee City Council
Fife Council
Perth and Kinross Council
Stirling Council

1.3 Forth Unit

Edinburgh City Council
East Lothian Council
Falkirk Council
Midlothian Council
North Lanarkshire Council
Scottish Borders Council
Stirling Council
West Lothian Council

2. ALL PURPOSE UNITS

2.1 Central Scotland Unit

Argyll and Bute Council
Perth and Kinross Council
Stirling Council
West Dunbartonshire Council

2.2 North East Scotland Unit

Aberdeen City Council
Aberdeenshire Council
Highland Council
Moray Council

2.3 North West Scotland Unit

Argyll and Bute Council
Highland Council
Perth and Kinross Council
Stirling Council

2.4 South East Scotland Unit

Dumfries and Galloway Council
Edinburgh City Council
Midlothian Council
Scottish Borders Council
South Lanarkshire Council

2.5 South West Scotland Unit

Dumfries and Galloway Council
East Ayrshire Council
North Ayrshire Council
Renfrewshire
South Ayrshire Council
South Lanarkshire Council