At night, how must you secure a vehicle which has broken down at a place where it constitutes a danger to other traffic?

Your answer is correct as it includes both essential actions required when securing a broken-down vehicle at night. According to German traffic regulations, it's crucial to immediately activate the hazard warning lights to alert other road users of the danger. Additionally, placing a warning triangle at a sufficient distance from the vehicle helps provide clear visual warning to incoming traffic, allowing them to react safely and avoid a potential accident. Both actions are vital for ensuring safety on the road under such circumstances.