# Analysis of the Severity of Heavy Truck Traffic Accidents Under Different Road Conditions
## 7 Discussion  
Reducing road accident severity is a central objective of the new \"Decade of Action for Road Safety 2021-2030\" [29; 30]. To address the severity of heavy truck accidents, this study utilized traffic accident data from the past five years in a certain region of China to establish logistic regression models. The study analyzed the factors contributing to accident severity \begin{table}
\begin{tabular}{p{113.8 pt} p{113.8 pt} p{113.8 pt}} \hline \hline
**Road Types** & **Policy Recommendations** & **Benefits** \\ \hline \multirow{8}{*}{**Urban roads**} & Enhancing education and regular medical check-ups for drivers over 50 & Enhance safe driving awareness and reduce accidents caused by health issues or slower response times among older drivers & \\  & Restricting truck access on certain sections & Reduce the risk of mixed traffic with smaller vehicles & \\  & Addressing poor sight distance, unclear traffic markings, improper sign placement, and road surface defects & Enhance visibility and clarity of signage assists drivers in earlier recognition of road information, thereby reducing unexpected collision risks & \\  & Intensifying enforcement against speeding and red-light violations by heavy trucks at night & Reduce the frequency of serious traffic accidents caused by these violations significantly, raise awareness for safe driving & \\ \hline \multirow{8}{*}{**Highways**} & Implementing separate lanes for passenger and freight vehicles & Reduce the likelihood of side and rear-end collisions, and enhance the overall safety and efficiency of traffic flow & \\  & Adding speed limit and distance warning signs on accident-prone sections & Decrease rear-end and loss-of-control accidents caused by excessive speed and insufficient following distance & \\  & Installing stop and yield signs, speed bumps, and consolidating closely spaced small entrances & Reduce collision risks at dense entrances and exits, preventing small vehicles from accidentally entering high-speed traffic & \\  & Adding guardrails where roadside clear zones are insufficient, and addressing various road safety hazards & Prevent vehicles from veering off the road, reducing the severity of rollovers and collisions & \\ \hline \multirow{8}{*}{**Expressways**} & Enhancing the detection and warning of driver violations & Provide timely warnings to drivers to correct behavior, reducing accident risks caused by violations Strengthen source control to ensure vehicle & \\  & Conducting source supervision starting from the heavy truck companies & maintenance and driver training meet safety standards, enhancing driving safety & \\  & Install stepwise speed reduction and rumble strips in advance, and strengthen enforcement against speeding & Improves road infrastructure to ensure safety, and prevent severe accidents caused by excessive speed & \\  & Implement enhanced speed control measures for heavy trucks, scientifically set up escape lanes, and use variable message boards to in-form passing vehicles of driving precautions & Ensure road safety by controlling vehicle speeds, while dynamic message boards provide real-time road information and driving recommendations, enabling drivers to adjust their behavior promptly in response to changing road conditions & \\  & Advanced equipment such as drones can be used to quickly identify and remind pedestrians illegally on the expressway and drivers and passengers of broken-down vehicles who have not yet left the area & Accelerate identification and warnings preventing secondary accidents caused by unauthorized pedestrians and disabled vehicles, thereby enhancing emergency response times & \\  & Further strengthen the enforcement of control measures for visibility levels of 100–200 m & Maintain safer driving speeds and distances, reducing chain collisions caused by poor visibility & \\ \hline \hline \end{tabular}
\end{table} 
Table 9: Policy recommendations and benefits. under different road types: urban roads, highways, and expressways.