How do you secure a car with a manual gearbox against rolling away on a downhill slope?

To secure a car with a manual gearbox against rolling away on a downhill slope, both applying the parking brake and engaging first gear or reverse gear are essential.

According to German traffic regulations, when parking on a slope, it's crucial to activate the parking brake to ensure the vehicle remains stationary; this provides a strong mechanical hold. Additionally, engaging the first or reverse gear prevents the vehicle from rolling as it utilizes the engine's resistance to stay in place. The gear lever should never be left in neutral, as this would not provide any resistance, increasing the risk of the vehicle rolling away.

It's important to apply both measures to maximize safety and comply with the regulations concerning vehicle security when parked on slopes.