When should you use hand signals instead of turn signals?

Using hand signals instead of turn signals is particularly helpful during daylight when visibility may be affected by bright sunlight. In such scenarios, turn signals can sometimes be harder for other drivers to see, so hand signals serve as an additional way to communicate your intentions clearly to those around you.

While hand signals can be useful in various situations, the emphasis on bright sunlight highlights the necessity of ensuring other road users are aware of your actions. Hand signals may not be as effective in low visibility conditions or during night driving when other drivers rely on their own lights to see and interpret signals. Thus, focusing on visibility directly supports the safe communication required while driving.