1 General Provisions 2 Highway Classification and Class Selection 2.1 Highway function and classification 2.2 Selection of highway technical classification and design speed 2.3 Control of access 3 Highway Capacity 3.1 General 3.2 Level of service 3.3 Design hourly volume for highway 3.4 Design capacity of motorway or Class-1 highway segments 3.5 Capacity of interchange 3.6 Capacity of a Class-2 or Class-3 highway 4 Overall Design 4.1 General 4.2 Highway function and technical criteria 4.3 Scope of project and implementation plan 4.4 Environmental stewardship and resource conservation 4.5 Design checking and safety assessment 5 Highway Route Location 6 Highway Cross-sections 6.1 General 6.2 Traffic lane 6.3 Median 6.4 Shoulders 6.5 Road crown and cross-slope 6.6 Highway clearance profile 6.7 Land acquisition for highway reserve 7 Highway Horizontal Alignment 7.1 General 7.2 Tangent 7.3 Circular curve 7.4 Spiral 7.5 Superelevation on circular curve 7.6 Widening on circular curve 7.7 Superelevation and widening transition sections on Class-4 highways 7.8 Length of horizontal curve 7.9 Sight distance 7.10 Switchback curve 8 Highway Profile 8.1 General 8.2 Grades 8.3 Length of grade 8.4 Climbing lane 8.5 Resultant gradient 8.6 Vertical curves 9 Geometric Design 9.1 General 9.2 Horizontal alignment design 9.3 Vertical alignment design 9.4 Design of cross-section 9.5 Alignment combination design 9.6 Coordination of alignment of bridges and tunnels 9.7 Configuration of roadside facilities 9.8 Environmental fitness of highway alignment 10 At-grade Junctions 10.1 General 10.2 Highway alignment at at-grade junctions 10.3 Sight distance 10.4 Turning roadway design 10.5 Auxiliary lanes and traffic islands 10.6 Reconstruction of at-grade junctions 11 Grade-separated Junctions 11.1 General 11.2 Sight distance 11.3 Design of ramps 11.4 Basic number of lanes and lane balance 11.5 Major forks and branch connections on main routes vs.diverges and merges on ramps 11.6 The at-grade junction between an interchange ramp and an intersecting highway 11.7 Grade separations 12 Railway, Farmroad and Pipeline Crossings 12.1 General 12.2 Grade-separated highway-railway crossing 12.3 Highway-railway at-grade crossings 12.4 Highway-farmroad crossings 12.5 Highway-cable line and highway-pipeline crossing 13 Highway Roadside Facilities 13.1 General 13.2 Toll station 13.3 Service areas and rest areas 13.4 Transit bus bays 13.5 U-turns on motorways Background to Provisions 1 General Provisions 2 Highway Classification and Class Selection 3 Highway Capacity 4 Overall Design 5 Highway Route Location 6 Highway Cross-sections 7 Highway Horizontal Alignment 8 Highway Profile 9 Geometric Design 10 At-grade Junctions 11 Grade-separated Junctions 12 Railway, Farmroad and Pipeline Crossings 13 Highway Roadside Facilities Technical Terms in English and Chinese