sight distance

简明释义

能见距离

英英释义

例句

1.The driver had to slow down because the sight distance 视距 was limited due to fog.

由于雾霾，司机不得不减速，因为sight distance 视距有限。

2.The highway department is responsible for maintaining clear sight distance 视距 at intersections.

高速公路部门负责维护交叉口的清晰sight distance 视距。

3.Road signs are placed to ensure that the sight distance 视距 is adequate for drivers to react.

道路标志的设置是为了确保司机有足够的sight distance 视距来做出反应。

4.During the night, the sight distance 视距 is reduced, making it harder to see obstacles.

在夜间，sight distance 视距减少，使得看清障碍物变得更加困难。

5.In mountainous areas, the sight distance 视距 can change rapidly with the terrain.

在山区，sight distance 视距可能会因地形而迅速变化。

作文

The concept of sight distance is crucial in various fields, particularly in transportation and civil engineering. Sight distance refers to the length of roadway visible to a driver or pedestrian, which is essential for ensuring safety and efficiency on the roads. When designing roads, engineers must consider sight distance to prevent accidents and improve traffic flow. Inadequate sight distance can lead to dangerous situations, such as collisions, especially at intersections or curves where visibility is limited.In urban areas, sight distance can be affected by several factors, including buildings, trees, and other structures that obstruct the view. For example, when a driver approaches an intersection, they need sufficient sight distance to see oncoming traffic and make informed decisions about when to proceed. If the sight distance is compromised by a tall building or dense foliage, it can create a hazardous environment. This is why city planners often conduct studies to ensure that new developments do not negatively impact the sight distance at critical points on the road.Moreover, sight distance is not only important for drivers but also for pedestrians. Crosswalks should be designed with adequate sight distance so that both pedestrians and drivers can see each other clearly. This visibility helps pedestrians assess whether it is safe to cross the street and allows drivers to react appropriately. In many cities, regulations are in place to maintain clear zones around crosswalks to enhance sight distance and reduce the risk of accidents.In addition to urban planning, sight distance is a key consideration in highway design. Highways typically require longer sight distances due to higher speeds. Engineers use specific formulas to calculate the necessary sight distance based on the speed limit and road conditions. For instance, on a highway with a speed limit of 65 miles per hour, the required stopping sight distance may be significantly greater than on a residential street with a speed limit of 25 miles per hour. This calculation is vital for ensuring that drivers have enough time to react to obstacles or changes in traffic conditions.Furthermore, sight distance plays a role in the design of road signage and signals. Signs must be placed at a distance that allows drivers enough time to read and respond to them. If a sign indicating a sharp turn is too close, drivers may not have adequate sight distance to slow down safely. Therefore, understanding and applying the principles of sight distance is essential for creating effective roadways that prioritize safety.In conclusion, sight distance is a fundamental aspect of road design and safety. It influences how roads are constructed, how traffic flows, and how accidents can be prevented. By ensuring that both drivers and pedestrians have adequate sight distance, we can create safer and more efficient transportation systems. As cities continue to grow and evolve, incorporating the concept of sight distance into planning and development will remain a priority for engineers and urban planners alike.

“视距”这一概念在多个领域中至关重要，尤其是在交通和土木工程中。“视距”指的是驾驶员或行人可见的道路长度，这对于确保道路安全和效率至关重要。在设计道路时，工程师必须考虑“视距”，以防止事故并改善交通流量。不足的“视距”可能导致危险情况的发生，例如在交叉口或曲线处，由于视线受限而发生碰撞。在城市地区，“视距”可能受到多种因素的影响，包括建筑物、树木和其他妨碍视线的结构。例如，当驾驶员接近交叉口时，他们需要足够的“视距”来看到来车并做出明智的决定，判断何时可以通过。如果“视距”因高楼或浓密的植被而受到影响，可能会造成危险的环境。这就是为什么城市规划者通常进行研究，以确保新开发项目不会对道路关键点的“视距”产生负面影响。此外，“视距”不仅对驾驶员重要，对行人也是如此。人行横道的设计应具备足够的“视距”，以便行人和驾驶员能够清晰地看到彼此。这种可见性有助于行人评估过马路是否安全，并让驾驶员做出适当反应。在许多城市，法规规定在人行横道周围保持清晰区域，以增强“视距”，减少事故风险。除了城市规划外，“视距”在高速公路设计中也是一个关键考虑因素。高速公路通常需要更长的“视距”，因为速度较快。工程师使用特定的公式，根据限速和道路条件计算所需的“视距”。例如，在限速65英里每小时的高速公路上，所需的停车“视距”可能显著大于限速25英里每小时的住宅街道。这一计算对于确保驾驶员有足够的时间对障碍物或交通状况变化做出反应至关重要。此外，“视距”在道路标志和信号的设计中也起着作用。标志必须放置在一定距离，以便驾驶员有足够的时间读取和响应。如果指示急转弯的标志距离太近，驾驶员可能没有足够的“视距”安全减速。因此，理解和应用“视距”原则对于创建优先考虑安全的有效道路至关重要。总之，“视距”是道路设计和安全的基本方面。它影响道路的建设、交通流动以及事故的预防。通过确保驾驶员和行人都有足够的“视距”，我们可以创造更安全、更高效的交通系统。随着城市的不断发展和演变，将“视距”的概念纳入规划和开发仍将是工程师和城市规划者的优先事项。