What is the maximum design slope of a bicycle lane?

General Principles for Design of Civil Buildings (GB 50352-2005) 5.3.1 The ground and road slopes of building bases should comply with the following regulations:
The longitudinal slope of the non motorized vehicle lane in the base should not be less than 0.2% of the source, nor should it be greater than 3%, and its slope length should not be greater than 50m; In areas with heavy snow and severe cold, it should not exceed 2%, and the slope length should not exceed 100m; The transverse slope should be 1% to 2%.
The longitudinal slope of non motorized vehicle lanes in Article 6.3.5 of the Design Specification for Urban Road Engineering (CJJ37-2012) should be less than 2.5%; When it is greater than or equal to 2.5%, the maximum length of the longitudinal slope should comply with the provisions of Table 6.3.5.
The lateral inclination of the top surface of a road roadbed, expressed as a percentage, can be divided into unidirectional and bidirectional. The straight section is bidirectional, while the flat curve and superelevation section are unidirectional. The slope rate mainly depends on the technical level of the road, the building materials of the components, and the longitudinal slope of the road. The width of each component and the influence of local climate conditions should also be considered.
The upward slope of the longitudinal slope along the route is positive, while the downward slope is negative. When the slope difference is positive, it indicates that the road profile shows a convex gradient change, and a convex vertical curve is set; On the contrary, if the slope changes to a concave shape, a concave vertical curve will be set. If two adjacent ramps are 6% uphill and 4% downhill, the difference in slope is 10%. The train passes through a grade change point. The coupler generates additional stress, and the vehicle generates local acceleration, which is proportional to the gradient difference.