MODULAR SEPARATION OF VEHICLE ZONES TO PROTECT PEDESTRIANS The TB Plus barrier is a popular extension of the TB 400 single-tube collision protection. With the addition of the double handrail, the TB Plus combination offers a perfect solution for protecting pedestrians from possible collisions with vehicles involving a low impact risk. Flexible traffic barriers that are easy to install Just like the other traffic barriers in the FLEX IMPACT ® family, the TB Plus barrier is extremely impact-resistant. After a crash this barrier for pedestrians retains its original shape, appearance and properties. The TB Plus is light and easy to install. And this barrier is part of the modular series, which can grow at the same pace as your company’s needs.