Excuse me, what do the staff in the mechanical and electrical direction in expressway generally do? Which is better, the general toll collector or the electromechanical staff?

The work of the toll collector is relatively simple, and the mechanical and electrical work is relatively technical. It is the technical support department for charging. The specific work here includes: daily maintenance of the three systems (charging, monitoring and communication), equipment updating, transformation and upgrading, and other electromechanical work. The definition of electromechanical is not exactly the same everywhere. In short, it is a post with strong technology, a strong computer technology foundation, and a certain understanding of information processing technology, as hard as a toll collector. Your major in communication is right!