RRB Technician Grade I Signal vs Grade III: What Actually Changes in the CBT
RRB Technician recruitment covers Grade I Signal and Grade III together under one notice, and unlike RRB NTPC or JE, there is no second CBT stage for either grade: the single Computer Based Test directly decides shortlisting for Document Verification, limited to the number of notified vacancies. The two grades share that single-CBT structure and overall scale, but the actual subject mix inside the paper is genuinely different.
- Both grades run a single CBT only, no CBT 2, and it directly decides Document Verification shortlisting, limited to notified vacancies.
- Grade I Signal covers five sections including Basics of Computers and Applications (20 questions) and Basic Science and Engineering (35 questions, its largest single section); Grade III covers only four sections and has no dedicated computer-applications section at all.
- Both share the same overall scale: 100 questions for 100 marks in 90 minutes, one composite timer for the whole paper with no sectional lock, and 0.333 marks deducted per wrong answer.
- The minimum qualifying percentage is identical for both grades: 40% for UR and EWS, 30% for OBC (NCL) and SC, 25% for ST.
Grade I Signal vs Grade III: section breakdown
| Section | Grade I Signal | Grade III |
|---|---|---|
| General Awareness | 10 questions | 10 questions |
| General Intelligence and Reasoning | 15 questions | 25 questions |
| Mathematics | 20 questions | 25 questions |
| Basics of Computers and Applications | 20 questions | Not included |
| Basic Science and Engineering / General Science | 35 questions (Basic Science and Engineering) | 40 questions (General Science) |
Same shell, different subject weighting
Strip away the section names and both papers look identical: 100 questions, 100 marks, 90 minutes, one combined timer with no sectional lock, and the same 0.333-mark penalty per wrong answer. Neither grade has a physical test or a typing test attached to its CBT stage the way some other railway exams do; for either grade, this single written paper is the whole gate to Document Verification.
Where the two papers actually diverge
Basics of Computers and Applications and Basic Science and Engineering appear only in the Grade I Signal paper, together accounting for 55 of its 100 questions, which pushes it toward a more technical, engineering-leaning paper overall. Grade III drops both in favour of a broader General Science section (40 questions) and gives more weight to General Intelligence and Reasoning and Mathematics (25 questions each, against 15 and 20 respectively in Grade I Signal), making it a more evenly spread, generalist paper by comparison.
Basics of Computers and Applications and Basic Science and Engineering together account for 55 of Grade I Signal's 100 questions, a section split Grade III does not share at all.
What this means for your prep split
If you are preparing for Grade I Signal, budget real, dedicated time for computer-applications basics and engineering science specifically, since together they are over half the paper and are not covered by generic reasoning or aptitude practice. If you are preparing for Grade III, your time is better spread more evenly across Mathematics, Reasoning, and General Science, without needing a computer-applications-specific track at all.
RRB Technician is not covered in RRB NTPC vs Group D vs JE vs ALP, which compares four other Railways exams; this one fills that gap for Technician specifically. Practice tests for both grades are available from RRB Technician, part of the government exams directory.
Frequently asked questions
Is RRB Technician a single CBT, or does it have a CBT 2 like NTPC or JE?
A single CBT only, for both Grade I Signal and Grade III. There is no second CBT stage; the one written paper directly decides shortlisting for Document Verification.
What sections does Grade I Signal have that Grade III does not?
Basics of Computers and Applications (20 questions) and Basic Science and Engineering (35 questions). Grade III replaces both with a single, broader General Science section (40 questions) and has no dedicated computer-applications section.
Is the negative marking different between Grade I Signal and Grade III?
No. Both deduct 0.333 marks (one-third) per wrong answer, and both use the same 100Q/100 marks/90-minute scale with a single composite timer.
What is the minimum qualifying percentage for RRB Technician?
40% for UR and EWS, 30% for OBC (NCL) and SC, and 25% for ST, the same thresholds for both Grade I Signal and Grade III.