Communication is the key to successful coordination. You need to establish clear and consistent channels of communication with your drivers, dispatchers, and customers. You should use technology tools, such as GPS tracking, mobile apps, online portals, or radio systems, to facilitate real-time information exchange and feedback. You should also set expectations and guidelines for communication, such as frequency, format, tone, and etiquette. For example, you should inform your drivers about their routes, schedules, and delivery instructions before they start their shifts, and update them on any changes or delays. You should also communicate with your dispatchers regularly to coordinate the allocation and dispatch of vehicles and drivers, and to report any incidents or problems. Finally, you should communicate with your customers to confirm their orders, delivery times, and special requests, and to provide them with tracking and confirmation details.