traffic barrier gate: 1. of high speed barrier 2. of heavy duty 3.full automatic 4. competetive price traffic barrier gate: Basic Features:1. By-security. The barrier gate will automatically reverse when meeting obstacles during closing.2. AC motor is more powerful and no maintenance.3. Barrier Beam/arm can be chosen from 3 meters to 6 meters4. closing time is also arranged from 1 second to 6 ...