Contents ..... 2 Introduction ..... 3 Classification of Destinations ..... 4 Group 1 – Emergency & Critical Response Destinations ..... 4 Group 2 – Essential Public Service Destinations ..... 4 Group 3 – Administrative, Civic and Business Destinations ..... 5 Group 4 – Community, Leisure and Local Access Destinations ..... 5 General Provisions and Exceptions ..... 7 Exclusions ..... 7 Traffic Signs Design Principles ..... 8 Road Hierarchy and Route Classification ..... 8 Primary Route Network in County Durham ..... 8 Principal Route Network ('A' Roads) ..... 9 Secondary and Local Roads ..... 9 Hierarchy of Destinations ..... 9 Regional Destinations ..... 9 Primary Destinations (Towns and Cities) ..... 10 Contact Details ..... 11 Alternative formats ..... 11