(1) at the same level of Road intersection, the general maintenance of the longitudinal slope of the same, and change their cross gradient. Cross sectional switch usually change the longitudinal slope of small road, the road ridge line gradually to the longitudinal slope is road lane line moving, transverse slope and longitudinal slope of the cross road slope is consistent.(2) the main roads and secondary roads intersect, and sections of the main road were unchanged, while the secondary road double slope sections, gradually transition to the single slope cross section is consistent with the main road longitudinal slope, in order to ensure the main road traffic convenience.(3) at least one of the longitudinal direction of the road should be deviated from the intersection to facilitate drainage.(4) intersection layout of rain water, road rainwater should not flow through the intersection crosswalk, or another road, the rain mouth should be set up in the crosswalk before or low-lying.(5) elevation of intersection design should be consistent with the elevation of the surrounding buildings.
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