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

In German traffic rules, when a load extends beyond the rear of a vehicle, it must be marked with a red light or red reflector to warn other road users, especially at night or in poor visibility. The maximum height allowed for this marking above the roadway is 1.50 meters. This height ensures the warning light or reflector is clearly visible to drivers following behind, without being so high that it might be overlooked or confused with other signals. Keeping it at or below 1.50 meters helps maintain safety by making the protruding load easy to see and judge in traffic.