Chapter 1 General principle
Provision 1.0.1 This specification is designed to make urban road design reaching advanced technique and guaranteed quality as well as to be economic, reasonable, safe, and applicable.
Provision 1.0.2 This specification is applicable to designs on roads, squares, and parking lots of planning area in big/middle/small city and “satellite” town, but not to block road and county road.
The design on newly constructed road must follow this specification. For reconstructed road, this specification can be satisfied by steps in special case by comparison on technique and economy.
Urban roads and highways are divided at border line of urban planning areas. The entrance/exit road outside the planning area of cities and “satellite” towns should be designed according to relevant standard of this specification. The roads other than entrance/exit road should follow relevant standards.
Provision 1.0.3 Road design should be conducted according to road classification, grade, redline width, cross-section type, elevation, ground rod line and underground pipeline layout all of which are defined in urban overall planning.
The design should be conducted according to traffic volume, traffic property, and technical requirements on major structure, and should also satisfy the requirements on environmental protection.
The road design should well balance short-term and long-term, construction and reconstruction, part and whole, and should pay great attention to economic, social and environmental benefit.
The conflict between underground pipelines and ground facilities should be handled properly; underground pipelines should always go first so as to avoid repeated excavation.
Construction investment, transport benefit and maintenance expense should be well blanced. It’s inadvisable to adopt low technical standard simply for investment save.
The design should well balance people, vehicle, road, and environment according to requirements on traffic works.
Road plane, vertical section, and cross section should coordinate with each other. Road elevation should coordinate with drainage, underground pipeline, and buildings etc.
Land acquisition and house demolition should be conducted rationally while properly deal with cultural relics, precious trees, and historical sites etc.
The demand of handicapped should be well considered.