Tham khảo tài liệu '101 helpful hints for ielts part 10', ngoại ngữ, toefl - ielts - toeic phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 101 Helpful Hints for 1ELTS major concern of traffic choking the city. The Beam-Operated Traffic System on the other hand provides a complete solution to city transportation. Included in its scope is provision for the movement of pedestrians at any point and to any point within the system. A city relieved of roads carrying fast moving cars and trucks can be given over to pedestrians and cyclists who can walk or pedal as far as they wish before hailing a quickly approaching beam-operated car. Cyclists could use fold-up bicycles for this purpose. Section vi Since traffic will be designated an area high above the ground human activities can take place below the transit system in complete safety leading to a dramatic drop in the number of deaths and injuries sustained while in transit and while walking about the city. Existing roads can be dug up and grassed over or planted with low growing bushes and trees. The look of the city is expected to improve considerably for both pedestrians and for people using the System. Section vii It is true that the initial outlay for a section of the beam-operated system will be more than for a similar stretch oftarred road. However costs for the proposed system must necessarily include vehicle costs which are not factored into road-building budgets. Savings made will include all tunnels since it costs about US 120 000 per kilometre to build a new six lane road tunnel. Subway train tunnels cost about half that amount because they are smaller in size. Tunnels carrying beamed traffic will have a narrower cross-sectional diameter and can be dug at less depth than existing tunnels further reducing costs. Objections The only major drawbacks to the proposal are entrenched beliefs that resist change the potential for vandalism and the loss of revenue for car manufacturers. Video camera surveillance is a possible answer to vandalism while the last objection could be overcome by giving car manufacturers beam-operated vehicle building contracts.
