Which of the following is NOT a requirement for tail lamps?

The reason that one of the options is not a requirement for tail lamps is that tail lamps are designed to provide clear and consistent signaling to other drivers, ensuring safety on the road. While tail lamps must emit a steady light, be clearly visible from a reasonable distance, and must be red or clear in color to convey information to other road users, applying tape to them does not meet the standards for their functionality or safety. In fact, coating with tape could obstruct the light output or alter its color, potentially leading to confusion and miscommunication with other drivers. Therefore, the use of tape on tail lamps is not an acceptable practice in maintaining the required visibility and effectiveness needed for road safety.