Communication engineering in Zheng Wen is most suitable for the maintenance and management of communication specialty of operating units and communication engineering construction and design units.
Electrical engineering and automation, mainly based on subway traffic signal control, also includes urban road intelligent control and electric telecontrol automatic control.
Mechanical engineering is automation, emphasizing vehicle control and ground interaction information.
How can I put it? Subway and big railway (national railway) have a lot in common, such as vehicle specialty, communication specialty and commonality. There is a great difference in signal specialty between the national railway and the subway. The signal system of the big railway is particularly complicated, especially now the high-speed rail system uses CTC\CTC2\CTC3, but the subway does not have this system. In short, if you want to enter the big railway, don't choose the signal (that is, urban rail transit control). The vehicle specialty is closest to the railway vehicle maintenance system, such as the depot, the EMU depot and the vehicle factory (both the factories under CSR and CNR can be used).
Railway communication system, since the separation of Tietong, the remaining railway professional communication is meaningless, the treatment is not high, and the development in the railway is limited. Either do engineering, such as Communication and Signal Engineering Group, a subsidiary of Shanghai Communication and Signal Engineering Company. Not bad.
I know this is the general situation. Make up your mind. (I don't care if the reward is not rewarded)