The Yodock 2001M-BM is a patented water-ballasted device used for traffic control and construction projects. It can be used empty or ballasted with water, sand, or other materials. It can be interconnected or spaced apart to clearly delineate the intended path for motorists, pedestrians, and workers. Improved features include increased durability, versatility, and functionality. The Model 2001MB is made from High Molecular Weight High-Density Plastic, which makes it 4-5 times stronger than other LLDPE plastic products. It is the ideal product for urban constuction sites with post stabilizers for fence and sign applications.