Jackie Chen

Interestingly, turnstiles were mainly designed to stop animals at a place. Firstly, farmers made this tool with wooden posts. In early 1900s, many businesses started using these turnstiles. Like in 1913, Clarence Saunders placed them in his Piggly Wiggly store in USA to control crowd. If you want to know […]

According to reports, 50 to 60% of guardrail accidents lead to injuries or fatalities. But the truth is, many crashes were not reported. And, when these are included, only 6% of all guardrail impacts actually result in injury or death. The dimensions of guardrail actually decide how well this structure

More than half of US traffic accidents are due to roadway departure crashes. Unfortunately, 28% of those fatal crashes will occur in horizontal curves. So, everyone wants to know how to reduce these accidents. The most effective way is to install safety signs. In case of curves, chevron safety sign

In this topic, you will learn what polyester is and its main types, properties, and pros/cons. We have also explained which industries you can use this material in. Further, you will see the comparison of polyester with some other commonly used fabrics like cotton and nylon. Everything is written in

What is divider in road? A road divider is a barrier in the middle of the road. Basically, it separates traffic that moves in opposite directions. These dividers lowers the risk of head on collisions. In this article, you will know all the main types of road dividers. Furthermore, you