Design Speed

简明释义

设计航速

英英释义

例句

1.For safety reasons, the Design Speed on this section of the road is limited to 40 km/h.

出于安全原因，这段道路的设计速度限制为40公里/小时。

2.In urban planning, the Design Speed of roads is critical for ensuring safety and efficiency.

在城市规划中，道路的设计速度对确保安全和效率至关重要。

3.The Design Speed of the bridge was calculated to handle heavy truck traffic without compromising stability.

该桥的设计速度计算是为了处理重型卡车交通而不影响稳定性。

4.The engineers set a Design Speed of 120 mph for the new highway to improve travel times.

工程师为新高速公路设定了设计速度为120英里/小时，以提高旅行时间。

5.The railway line was constructed with a maximum Design Speed of 300 km/h to accommodate high-speed trains.

这条铁路的建设采用了最高设计速度为300公里/小时，以适应高速列车。

作文

In the field of engineering and transportation, the term Design Speed refers to the intended maximum speed for which a road, railway, or other transportation infrastructure is designed. This concept is crucial as it influences various aspects of design, safety, and functionality. Understanding Design Speed is essential for engineers, planners, and policymakers because it directly impacts the efficiency and safety of transportation systems. The significance of Design Speed can be observed in the construction of highways and railways. For instance, when engineers design a highway, they must consider factors such as road curvature, grade, and sight distance. These elements are all influenced by the Design Speed, which is determined based on the expected traffic conditions and vehicle types that will use the road. A higher Design Speed typically requires wider curves and gentler grades to ensure that vehicles can navigate safely at those speeds. Conversely, a lower Design Speed may allow for sharper curves but could increase the risk of accidents if drivers are not adequately prepared for the sudden changes in direction.Moreover, Design Speed plays a vital role in the safety of transportation systems. It is essential to set appropriate Design Speed limits that align with the capabilities of vehicles and the behavior of drivers. If the Design Speed is set too high for a particular section of the road, it can lead to dangerous situations, such as increased stopping distances and reduced reaction times. On the other hand, setting the Design Speed too low can result in inefficient traffic flow and longer travel times, which can frustrate drivers and lead to risky behaviors, such as speeding.In addition to safety considerations, the Design Speed also affects the economic aspects of transportation projects. Higher Design Speed roads often require more significant investment in materials and construction techniques, as they need to accommodate faster-moving vehicles. This can include reinforced structures, advanced drainage systems, and improved signage. However, the benefits of a well-designed high-speed road can outweigh these costs, as they can lead to reduced travel times and increased accessibility, ultimately contributing to economic growth.Furthermore, the concept of Design Speed is not static; it evolves with advancements in technology and changes in transportation policies. For example, the advent of autonomous vehicles and improvements in traffic management systems may influence future Design Speed standards. As vehicles become more capable of navigating complex environments safely, there may be opportunities to increase Design Speed limits in certain contexts, provided that safety remains a priority.In conclusion, the term Design Speed encompasses much more than just a number; it represents a critical component of transportation infrastructure planning and design. By understanding and applying the principles of Design Speed, engineers and planners can create safer, more efficient, and economically viable transportation systems. As we continue to innovate and adapt to new challenges in transportation, the importance of Design Speed will only grow, making it a fundamental concept for the future of mobility. Design Speed（设计速度）是指为道路、铁路或其他交通基础设施设计的预期最大速度。这个概念至关重要，因为它影响设计、安全性和功能的各个方面。理解Design Speed对于工程师、规划者和政策制定者来说至关重要，因为它直接影响交通系统的效率和安全性。