Directional indicators are tools used to show the direction of movement or orientation. Commonly found in vehicles, such as cars and bicycles, they signal turns or lane changes to other drivers. These indicators help improve road safety by providing clear communication about a driver's intentions. In aviation, directional indicators, like the heading indicator, assist pilots in navigating by displaying the aircraft's current heading. Similarly, in marine navigation, compasses serve as essential directional indicators, helping sailors determine their course. Overall, these devices play a crucial role in various modes of transportation, ensuring safe and efficient travel.