Intelligent transport systems (ITS) are the result of the system integration of modern navigation, information and communication technologies, automation, transport infrastructure, user facilities, focused on ensuring the safety and efficiency of the transport process, logistics, and improving comfort for drivers and passengers.

Many countries already have experience in creating intelligent transport systems. Thus, since the early 1980s, the United States, European countries and the Asia-Pacific region have been implementing programs focused on information technology for high-speed highways. Currently, the global ITS market continues to develop dynamically.

The creation of a unified information infrastructure of the transport complex is especially important for the Russian Federation, located in nine time zones and actively using all types of transport.

Already today, GLONASS satellite navigation technologies are used in almost all areas of human activity. These are law enforcement, security and search systems, coordinate and time support, monitoring of complex engineering structures, dangerous goods and various types of transport, people and animals, geodesy and cartography, agriculture, construction, synchronization of telecommunications and energy networks, hydrometeorology, etc.

Developing the concept of ITS of Russia, it is necessary to take into account the possibilities and prospects of modernization of the domestic global navigation satellite system GLONASS. Satellite navigation is the technological basis of intelligent transport systems. This is a unique Russian satellite navigation system in terms of coverage and significance.

Due to the peculiarities of the ballistic construction of orbital groupings, the GLONASS system surpasses GPS in high latitudes in terms of availability and is somewhat inferior in the equatorial zone. Currently, a new generation Glonass-K satellite with additional navigation signals at the L3 frequency and code separation is undergoing flight tests as part of the GLONASS orbital constellation, which will improve the accuracy of navigation definitions by using more broadband signals in the frequency ranges allocated for the GLONASS system. At the same time, within the framework of international cooperation, code separation can ensure the compatibility and complementarity of existing and emerging global and regional satellite navigation systems.

To improve the quality of navigation services provided to consumers, a set of functional additions to the GLONASS system is designed, which is an element of the general system. It provides consumers with information about the integrity of the navigation field, updated ephemeris-time information, corrective information for navigation measurements, as well as information about the quality of the functioning of GLONASS and GPS.

Complexes of functional additions by the size of the territory of action can be classified into local (150 km), regional (1000 km), wide-band (up to 5000 km).

An example of a wide-band system of functional additions is the system of differential correction and monitoring of radio navigation fields (SDCM). The Russian SDCM is a functional addition to the GLONASS and GPS satellite navigation systems, which improves their characteristics for solving tasks requiring high accuracy and reliability.

The SDCM includes a measurement collection complex, including measurement collection stations on the territory of the Russian Federation and abroad, a SDCM center and a complex for delivering information to consumers.