在陡峭的下坡停车时，建议您遵守的交通规则为？
将前轮转高路缘并将车子打为一档Turn front wheels towards the curb and put the car in first gear
将车轮打直并确定打开手刹车Keep wheels straight and ensure handbrake is on
将车钥匙留在车中，以防刹车失灵Leave the key in the car in case of brake failure
将前轮转向路缘并将车子打为倒车档Turn front wheels towards the curb and put the car in reverse gear