What is the maximum height allowed above the roadway for a red light marking a load extending to the back?

You answered correctly. In Germany, when a load extends beyond the rear of your vehicle, a red light must be attached at night or in poor visibility. The maximum permissible height for this red light above the roadway is 1.50 meters. This rule ensures that following drivers can easily see the warning light, regardless of vehicle height. If the light is set higher than 1.50 meters, it might not be visible to all road users. Always ensure the red light marking for overhanging loads is positioned at or below 1.50 meters. This helps improve safety for everyone on the road.