How to write road warning slogans?

Accident-prone areas, continuous *km of sharp bends downhill, please drive with caution;

Continuous *km of sharp bends, downhill, * accidents have occurred, and * people died;

If you go downhill with a sharp bend for *km continuously, please put it into the holding gear to avoid overheating of the brakes;

Or just use traffic signs instead. In fact, most drivers will be cautious about curves.