Sticking your arm out of a moving vehicle can be dangerous due to several factors, including the speed of the vehicle and the potential hazards you may encounter. The specific speed at which it becomes dangerous to stick your arm out of the window can vary depending on different factors such as the design of the vehicle, the position of your arm, and the surrounding environment. However, it's generally advisable to keep all body parts inside a moving vehicle to minimize the risk of injury.
When you stick your arm out of a moving vehicle, several dangers arise:
Air resistance: As the vehicle moves faster, the air resistance or drag force on your arm increases. This can exert a significant force on your arm, potentially causing it to be pulled backward or sideways, which could strain or injure your muscles, tendons, or joints.
Debris and objects: When you extend your arm outside the vehicle, you expose it to the risk of colliding with debris, branches, or other objects along the road. Even small objects or insects traveling at high speeds can cause injury upon impact.
Proximity to other vehicles or obstacles: If you're driving close to other vehicles or passing by objects such as signs or poles, sticking your arm out of the window increases the chance of your arm coming into contact with them. This can lead to severe injuries, including fractures or amputations.
Given these risks, it is generally recommended to keep all body parts, including arms, inside a moving vehicle and use the windows for viewing purposes only. It's crucial to prioritize safety and avoid any unnecessary risks while traveling in a vehicle.