trhe main characteristics  of the railway fence is :its  frame  soild ,its shape tall and large, it  prevent  climbing its colors bright ,its frame solid ,its shape tall and large ,it prevent climbing ,its colors bright,its form beautiful and generous ,now the railway has already begun to conduct a  comprehensive seep , therefore,the railway's  closed  will  have higher  requirements ,while the frame fence is the best choice to meet the requirements. So it appeared  has  been accepted by  railway interests