Building Multi-Lane Asphalt Expressways

Laying Down the Roadway

Constructing modern expressways requires proper road foundations and markings to guide traffic. Start by clearing a wide corridor and paving the road surface with asphalt blocks. To define driving lanes, integrate road line marking blocks directly into the road surface. Use yellow lane blocks down the center to designate opposing traffic flows or median divides, and lay white lane blocks in dashed or solid rows to separate multiple lanes traveling in the same direction.

Installing Barriers and Lighting

Once the roadbed is paved, secure the expressway shoulders and elevated overpass sections:

• Line the outer shoulders with modern roadside fence barriers to prevent vehicles from running off the asphalt.
• Place street poles at regular intervals along the highway shoulders or within the central median.
• Attach street lights to the top of the poles to keep long transit routes illuminated at night.

For complex highway interchanges, use overpasses and curved multi-lane markings to connect merging off-ramps smoothly with the main highway.