Curves and slope of road lighting problem how to solve?

Cars drive on the corners and ramp, it is important to vision problems. In general, smaller radius curve section, the lamps and lanterns should be arranged along the curve of the lateral, and reduce the size of the spacing of lamps and lanterns, general appropriate to stretch the lamp light spacing distance between 50% ~ 70%, the smaller the radius of curve

when the cars are driven on the corners and ramp, it is important to vision problems. In general, smaller radius curve section, the lamps and lanterns should be arranged along the curve of the lateral, and reduce the size of the spacing of lamps and lanterns, general appropriate to stretch the lamp light spacing distance between 50% ~ 70%, the smaller the radius of curve spacing should be smaller, light boom of cantilever length should be reduced. On the ramp set lighting, LED street lamps, lamps and lanterns should be brought in parallel to the road axis plane of symmetry perpendicular to the road of light distribution, narrowing the lamps and lanterns installation spacing, and sectional light type lamps and lanterns should be adopted. So that the driver will be able to identify the road bend from a distance or slope shape.