Final answer:
You should signal at least 100 feet before the turn or intersection in city driving, adjusting for higher speeds or highways, while adhering to any specific local traffic rules.
Step-by-step explanation:
When signaling before making a turn, the recommended distance is typically at least 100 feet before the turn or intersection in city driving, and a longer distance may be necessary when traveling at higher speeds or on highways. However, this can vary based on local traffic laws. To be safe, you should signal well in advance of the intersection and definitely before you start slowing down to turn. This will provide ample notice to other drivers and pedestrians that you intend to turn, thereby improving road safety and reducing the likelihood of an accident. Of course, you should always follow the specific rules of the road for your location, as they can sometimes be different.