Road Safety Design

The consultant will consider areas at risk of accidents such as intersections, route with narrow horizontal curves, route with long, steep slope, etc. to be safer and meet the standard. The detailed design will be carried out and report the design results in the next progress report. The safety condition concerns are as follows;

  • Upgrading the road both Horizontal and Vertical Geometry
    • The consultant considers adjusting the current access road. In the beginning, the consultant will re-align the existing route to be in line with the current access road at 2 locations, namely at Dewadah Hill (STA. Km. 27 + 250 to STA. Km. 28 + 250) and the Saddles Hill (STA. Km. 49 + 700 to STA. Km. 50 + 850)
    • The consultant considers adjusting vertical slopes with more than 10% (except the Elephant Cry Hill) and adjust the vertical curve length to conform with the area and design speed, at 45 locations.
  • The consultant has considered the criteria for additional lane for trucks or climbing lane at steep slopes where radius of curves are narrow in order to climb up. This causes traffic speed of the trucks to decrease and results in vehicles to be at risk of overtaking accidents. Therefore, additional lanes need to be designed for trucks, at 7 locations.
  • Installation of Roadside Barriers such as Steel Beam Guard Rail, Concrete Barrier and Guide Post.
  • Installation of Regulatory Signs, Warning Signs and Guide Signs based on the International Standard at appropriate areas.
  • Consider the design of Pavement Markings based on the International Standard at the appropriate areas.
  • The project owner office

    Neighbouring Countries Economic Development Cooperation Agency (Public Organization) (NEDA)

       123 Vibhavadi Rangsit Road, Chatuchak, Bangkok 10900

    0 2617 7676 0 2617 7683

    Consultant company group

    INDEX International Group Co.,Ltd.

       1/814 Soi Amporn, Moo 17, Khu Khot Subdistrict, Lam Luk Ka District, Pathum Thani 12130

    0 2532 3623 0 2532 3566

    Decade Consultant Co.,Ltd.

       1199 Piyawan Building, Floor 8, Paholyothin Road, Sam Sen Nai Subdistrict, Phaya Thai District, Bangkok 10400

    0 2619 9931 0 2619 9932

    PSK Consultant Co.,Ltd.

       1199 Piyawan Building, Floor 15 Room15 A, Sam Sen Nai Subdistrict, Phaya Thai District, Bangkok 10400

    0 2617 0429 0 2617 0426