The geometry of the road is particularly essential when it comes to road design. Geometry covers the width of the lanes, curve radii, and road profile grades. All of these variables must be considered in order to design a road that is both safe and functional.
The alignment of a road is one of the most significant parts of its design. Alignment refers to the horizontal and vertical curves of the road. The horizontal curves change the direction of the road, whereas the vertical curves (profiles) change the elevation. These curves must be properly constructed in order to provide a safe and comfortable driving experience.
Another important aspect of road design is the cross slope. Cross slope is the slope of the road from side to side. It is important to have a proper cross slope so that water drains off of the road so that vehicles do not slide down the road.
Finally, road profile grade is a significant consideration in road design. Grade refers to the steepness of the profile tangents. The road profile grades must be carefully constructed, considering sight distance, surface water drainage, and the comfort of vehicles of all sizes while climbing or descending.
In summary, there are numerous variables that contribute to the construction of a safe and functional road. Geometry is critical in ensuring that roadways can properly and safely accommodate the volume of traffic. When planning a new road or making changes to an existing one, speak with a professional who is knowledgeable about all areas of road design.
