What are the two way of traffic communication?

Many businesses and municipal services rely on two-way communication systems to stay in touch with their employees on site and in the field. Some of the most common examples of two-way communication systems are the radio, telephone, and computer-aided dispatch systems used by police, fire, and emergency response personnel. These systems allow dispatchers and supervisors to keep in touch with individuals and to coordinate the activities of groups of responders.

Two-way communications systems are also routinely used in the construction and building trades, public transportation, the trucking industry, and aviation by commercial and non-commercial pilots, just to name a few.

Two-way communication systems vary greatly in sophistication and special features. They range from simple handheld two-way transceivers that use a single dedicated channel to more complex systems that allow a large number of users to share several channels. The type of system chosen depends on many factors, such as the intended use, the location, the number of users, the frequency band, and the cost of the system. Regardless of the type of system chosen,