California Driver License (DMV) Written Practice Test

When a vehicle starts to overheat, it is important to handle the situation safely and effectively. Option A, turning on the air conditioning, will not actually cool down the engine and may cause it to overheat even more. Option B, increasing speed to create more airflow, is also not a recommended solution as it may put additional strain on the engine. Option D, adding cold water to the radiator while the engine is running, can cause further damage to the engine and should be avoided. The best course of action is to pull over and turn off the engine to allow it to cool down. This will prevent any further damage to the engine and allow it to cool down properly.