High traffic volume allows more vehicles on the expressway due to the design of
a) Speed limits
b) Medians
c) Exits
d) Multiple lane roads
The correct answer and explanation is:
The correct answer is d) Multiple lane roads.
Explanation:
High traffic volume on expressways is managed through the design of multiple-lane roads. These roads are designed to accommodate more vehicles by providing additional lanes, allowing for smoother traffic flow, better distribution of vehicles, and reduced congestion. Multiple lanes are crucial because they allow for more vehicles to travel simultaneously in different directions or at different speeds. Without these lanes, traffic would be bottlenecked, especially during peak hours.
Speed limits, medians, and exits, while important elements of road design, do not directly address the ability to handle high traffic volume. Speed limits are set to ensure safety and maintain reasonable travel speeds but do not affect the number of vehicles that can be accommodated. Medians are primarily used for safety, providing a physical barrier between opposing lanes of traffic, but they do not contribute directly to increasing traffic capacity. Exits are necessary for vehicles to leave the expressway, but they also need to be strategically placed to avoid disrupting traffic flow.
By having multiple lanes, expressways create more space for vehicles to travel. In addition to allowing vehicles to move more freely, multiple lanes help to segregate traffic according to speed, such as dedicated fast lanes and slower lanes. This minimizes the chances of traffic buildup or accidents that could slow down the overall flow. The layout of multiple lanes also provides opportunities for traffic to move around slower vehicles, improving efficiency and reducing the risk of gridlock.
In conclusion, multiple lane roads are the primary design feature that enables expressways to handle high traffic volumes, promoting efficient and safe transportation for all road users.