What repair method is not permitted for turn signals or stop lamps?

Using colored tape as a repair method for turn signals or stop lamps is not permitted because it does not provide a durable or reliable solution for essential safety equipment. Turn signals and stop lamps serve a critical function in vehicle safety, allowing other drivers to see and understand the vehicle's intentions on the road.

Colored tape may not maintain its visibility or integrity over time, especially when exposed to the elements. It can peel, fade, or come loose, which compromises the effectiveness of the signal. Additionally, regulations typically require that all lighting equipment must meet specific visibility and functionality standards to ensure that they perform correctly.

In contrast, methods like hot glue, epoxy resin, or wire ties, while not ideal, might be seen as more structurally sound alternatives, as they can better hold components in place or provide a more permanent fix than tape, even if they might also have limitations. In any case, the safest approach is to replace turn signal and stop lamp units with proper components that meet regulatory standards.