RRB Technician Post Preference: What Is EMU, TRS, TRD

While filling out the RRB Technician application form, many candidates come across terms like EMU, TRS, and TRD and are unsure which posts to choose. Along with understanding these departments, candidates must also check the required medical standards, vision criteria, educational qualifications, and job responsibilities before locking their preferences.

Selecting the right RRB Technician post preference is important because your choice determines not only your job role but also whether you meet the required medical standards during the recruitment process. Choosing a post without checking the eligibility criteria may lead to disqualification during the medical examination, even if you qualify for the CBT.

What Is EMU in RRB Technician?

EMU (Electric Multiple Unit) is the department responsible for the inspection, maintenance, and repair of suburban electric trains. Technicians posted in the EMU department ensure that trains remain safe, reliable, and ready for daily operations.

Job Responsibilities

• Maintenance of electric multiple unit trains

• Inspection of electrical and mechanical components

• Repair and replacement of faulty parts

• Preventive maintenance to ensure smooth train operations

What Is TRS in RRB Technician?

TRS (Traction Rolling Stock) deals with the maintenance and servicing of electric and diesel locomotives. Technicians working in TRS are responsible for keeping locomotives in proper working condition through regular inspection and repairs.

Job Responsibilities

• Maintenance of locomotives

• Troubleshooting electrical and mechanical faults

• Periodic servicing and inspection

• Ensuring locomotive safety and efficiency

What Is TRD in RRB Technician?

TRD (Traction Distribution) manages the railway's overhead electrical power supply system. Technicians in this department maintain electrical equipment that supplies power to electric trains.

Job Responsibilities

• Maintenance of overhead electrical equipment

• Inspection of traction substations

• Repair of power distribution systems

• Ensuring uninterrupted electricity supply for train operations

Medical Standards for RRB Technician Posts

Medical fitness is one of the most important eligibility conditions for RRB Technician recruitment. Different posts require different medical standards, mainly based on vision requirements.

Candidates should carefully check the required medical standard before selecting their post preferences.

Why Medical Standards Matter

Clearing the CBT alone does not guarantee selection. Candidates must also qualify for the prescribed medical examination.

For example, if a post requires B1 medical standards but your eyesight only meets the C1 standard, your candidature may be rejected during the medical test.

Before submitting the application, candidates should get their eyesight checked by an eye specialist to understand whether they fall under A3, B1, B2, or C1 medical standards.

Understanding Vision Standards

The RRB medical examination mainly checks distance vision, near vision, colour vision, binocular vision, and night vision depending on the post.

What Does 6/6 Vision Mean?

A candidate with 6/6 vision can clearly see an object from 6 metres that a person with normal eyesight can also see from the same distance. It is considered normal vision.

What Does 6/9 Vision Mean?

A person with 6/9 vision must stand 6 metres away to see an object clearly that someone with normal vision can see from 9 metres away.

What Does 6/12 Vision Mean?

A person with 6/12 vision needs to be 6 metres away to see an object that a person with normal eyesight can clearly see from 12 metres.

A3 Medical Standard

The A3 medical standard has the strictest vision requirements among Technician Grade III posts.

A3 Vision Requirements

• Distance Vision: 6/9, 6/9 (with or without glasses)

• Near Vision: 0.6, 0.6 (with or without glasses)

• Colour Vision Test

• Binocular Vision Test

• Night Vision Test

• Mesopic Vision Test

Candidates with colour blindness or weaker eyesight should avoid selecting posts requiring the A3 medical standard.

Comparison of Medical Standards

Before selecting your RRB Technician post preferences, it is important to understand the medical standards prescribed for different posts. 

These standards mainly assess a candidate's vision, including distance vision, near vision, colour vision, binocular vision, and night vision. Each medical category has different requirements, and candidates must meet the prescribed standard for the post they choose.

Candidates with weaker eyesight generally have better chances of qualifying for B2 and C1 category posts.

Eligible ITI Trades

Candidates can choose posts based on their ITI trade eligibility.

Some examples include:

• Mechanical Diesel: Category 2 and Category 7

• Welder: Categories 2, 4, 5, 7, 8, 11, 15, 21, 25

• Painter: Categories 7, 8, 11, 23

• Carpenter: Categories 5, 8, 11, 17

• Electrician: Categories 2, 6, 8, 9, 10, 11, 13, 14, 15, 18

• Fitter: Categories 2, 4, 5, 7, 8, 11, 12, 19, 21

Candidates should select only those posts for which they meet the prescribed educational qualifications.

RRB Technician Salary

RRB Technician employees receive salary as per the 7th Pay Commission along with applicable allowances.

• Technician Grade III: Approximately INR 32,000–36,000 in-hand per month.

• Technician Grade I: Higher salary than Grade III along with additional allowances.

Tips for Choosing RRB Technician Post Preference

Before submitting your application, keep these points in mind:

• Understand the meaning of EMU, TRS, and TRD before selecting preferences.

• Check the required medical standard for every post.

• Verify your ITI trade eligibility.

• Confirm your eyesight meets the required vision standards.

• Choose posts according to your qualification and medical fitness to avoid rejection during the medical examination.