Arkansas Commercial Driver License (CDL) Practice Test

The correct answer—reflectors and marker lights—highlights the importance of ensuring that these components are in good condition as part of an exterior inspection. Reflectors are crucial for visibility, especially in low-light conditions, as they help other drivers see your vehicle. Marker lights serve a similar purpose; they outline the dimensions of the vehicle, indicating its size and shape at night or in poor weather conditions. Both of these elements need to be clean and fully functioning to ensure safety on the road. While other options include lights that are also essential for vehicle safety, focusing on reflectors and marker lights specifically targets the necessity of visibility aids during an inspection. Therefore, inspecting these elements closely ensures that they serve their purpose effectively, enhancing overall safety for both the driver and others on the road.