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Guardrails are commonly found along highways and roads for the safety of vehicles and pedestrians. They serve as a protective barrier to prevent accidents and keep vehicles from falling off the road. However, with so many different types of guardrails available, it can be difficult to determine which option is the safest. In this blog, we will compare the AASHTO M180 guardrail system to traditional guardrails, and determine which one is the safer option.
AASHTO M180 Guardrail System:
The American Association of State Highway and Transportation Officials (AASHTO) developed the M180 guardrail system in response to the need for a more reliable and effective guardrail barrier. The M180 system is made up of W-shaped steel beams with a length of 12 feet and a height of 31 inches. The system also includes end treatments, which are designed to absorb the impact of a vehicle and prevent the guardrail from penetrating the vehicle. The end treatments are typically made up of steel plates and soil anchoring.
One of the main advantages of the AASHTO M180 system is its ability to absorb impact energy. The W-shaped beam design allows for better distribution and absorption of impact energy, reducing the force exerted on the vehicle occupants. Additionally, the end treatments of the M180 system can absorb a significant amount of impact energy, reducing the severity of crashes.
Furthermore, the AASHTO M180 system is designed to withstand different weather conditions, from excessive heat to heavy rainfall. This guardrail system can also resist corrosion, ensuring a longer lifespan.
Traditional Guardrails:
Traditional guardrails, on the other hand, are typically made up of wooden or metal posts, with the top rail being composed of steel cable or timber. These guardrails are designed to prevent vehicles from leaving the roadway and crashing into obstacles. However, traditional guardrails do not have any end treatments and are not as effective as the AASHTO M180 system in absorbing impact energy.
Another disadvantage of traditional guardrails is their susceptibility to decay and damage. Wooden posts can rot over time, while metal posts can rust and deteriorate. Additionally, traditional guardrails are less likely to withstand strong impacts, leading to a higher likelihood of accidents and fatalities.
Safety Comparison:
Overall, the AASHTO M180 guardrail system provides a safer option compared to traditional guardrails. The M180 system's ability to absorb impact energy and its effective end treatments make it more durable and reliable for preventing accidents.
According to a study conducted by the Federal Highway Administration, the AASHTO M180 guardrail system was found to reduce the severity of crashes by up to 85 percent when compared to traditional guardrails.
Moreover, the M180 system has been tested and approved by the National Cooperative Highway Research Program, meeting all safety standards and regulations.
Final Thoughts:
In conclusion, the AASHTO M180 guardrail system is the safer option compared to traditional guardrails. Its ability to absorb impact energy, durability, and reliability in different weather conditions make it a superior choice. As a result, it is advisable for highway and road managers to consider installing the AASHTO M180 guardrail system to ensure the safety of motorists and pedestrians.
For more information, please visit AASHTO M180 Galvanized Highway W Beam Guardrail.