RRB ALP โ Assistant Loco Pilot complete guide
The RRB ALP is the gateway to one of Indian Railways' most coveted jobs โ the person in the cab who actually drives the train. It is also the most demanding RRB recruitment, with four stages, a unique psychometric test, and the strictest medical standard in the railways. Understanding the full path before you open a textbook saves months of misplaced effort.
Definition: ALP stands for Assistant Loco Pilot โ the railway employee who operates locomotives alongside the Loco Pilot (LP), manages engine controls, monitors signals, and handles emergency braking. The promotion ladder is: ALP โ Senior ALP โ Loco Pilot (Goods) โ Loco Pilot (Passenger) โ Loco Pilot (Mail/Express) โ Loco Pilot (Rajdhani/Shatabdi/Vande Bharat).
Eligibility at a glance
Age: 18โ30 years as on the closing date of application. Relaxations: OBC 3 years, SC/ST 5 years, PWD 10 years, Ex-servicemen as per rules.
Educational qualification: Class 10 plus an ITI in a relevant trade (Electrician, Fitter, Wireman, Mechanic Motor Vehicle, Mechanic Diesel, Refrigeration & AC, and others notified in the official vacancy notification) OR a Diploma/Degree in Mechanical, Electrical, Electronics or Automobile Engineering. The trade certificate directly determines your Part B paper โ choose carefully when applying.
Medical standard: A-1 โ the strictest vision and hearing standard in Indian Railways. Check your eligibility for this before investing months in preparation (see Stage 4 below).
The four exam stages
Stage 1 โ CBT-1 (qualifying)
75 questions, 75 marks, 60 minutes. Negative marking: 1/3 mark per wrong answer.
| Section | Questions |
|---|---|
| Mathematics | 20 |
| General Intelligence & Reasoning | 25 |
| General Science | 20 |
| General Awareness & Current Affairs | 10 |
CBT-1 is qualifying only โ its marks are not counted in the final merit. Its purpose is to filter candidates for CBT-2. Aim to clear the cut-off comfortably; do not over-invest time here.
Stage 2 โ CBT-2 (merit-deciding)
This is the most important written stage โ its marks determine your final rank. It has two parts conducted in the same session.
Part A (100 questions, 90 minutes โ qualifying for Part B, but also used for ranking):
| Section | Questions |
|---|---|
| Mathematics | 25 |
| General Intelligence & Reasoning | 25 |
| General Science | 40 |
| General Awareness & Current Affairs | 10 |
General Science dominates CBT-2 โ 40 out of 100 questions. Class 10 NCERT Physics, Chemistry and Biology are the primary source, but railway-specific topics (electricity, magnetism, mechanics, heat engines) receive extra weight because they are directly relevant to locomotive operation.
Part B (75 questions, 60 minutes โ qualifying only, minimum 35% required):
Trade-specific questions based on your ITI / Diploma stream. Examples:
- Electrician / Wireman: Ohm's law, circuits, motors, transformers, semiconductors, earthing, electrical safety.
- Fitter: Workshop tools, measurements, fits and tolerances, welding basics.
- Mechanic Motor Vehicle / Diesel: Engine fundamentals, fuel systems, cooling and lubrication, chassis.
- Refrigeration & AC: Refrigerants, refrigeration cycle, compressors, condensers.
Part B is pass/fail at 35% โ score even 1 mark below this and you are eliminated regardless of Part A performance. But it is also relatively easy if your ITI trade matches: 35% is a low bar for someone who has studied their trade.
Stage 3 โ CBAT (Computer-Based Aptitude Test) โ ALP only
The CBAT is unique to ALP candidates; Technician candidates do not appear for it. It is conducted at designated RRB testing centres.
The CBAT measures five psycho-technical aptitudes through standardised sub-tests:
| Sub-test | What it measures |
|---|---|
| Symbolic Reasoning | Pattern recognition and logical deduction from symbols |
| Depth Perception | Judging relative distances and 3-D spatial relationships |
| Vigilance | Sustained attention during monotonous tasks |
| Memory | Sequential memory and short-term recall |
| Personality / Anxiety Control | Emotional stability, response to stress |
Critical rule: every sub-test is independently qualifying. A candidate who scores perfectly on four sub-tests but marginally fails one is eliminated. There is no averaging or compensation across sub-tests.
The CBAT is conducted only in Hindi and English (no regional language option), unlike CBT-1 and CBT-2 which are available in multiple languages.
Stage 4 โ Document Verification and Medical Examination
Medical standard: A-1 (the strictest in Indian Railways)
| Requirement | Specification |
|---|---|
| Distant vision | 6/6 each eye without glasses or contact lenses |
| Near vision | SN 0.6 without glasses |
| Colour vision | Must correctly distinguish red and green railway signals |
| Binocular vision | Required (no monocular vision) |
| Hearing | No hearing aid permitted; must pass pure-tone audiometry |
| General health | No fits, vertigo, colour blindness or cardiac conditions |
This is non-negotiable. A candidate who ranks 1st in CBT-2 but has uncorrected distance vision of 6/9 in one eye is rejected outright. Glasses and contact lenses do not help โ the requirement is unaided vision. Check your eyes with an ophthalmologist before applying.
Syllabus strategy โ what to study and how much
General Science (40 Qs in CBT-2) is the biggest differentiator:
- Physics: mechanics (Newton's laws, momentum, friction), electricity (Ohm's law, circuits, power), magnetism (fields, motors, generators), heat (specific heat, conduction/convection/radiation), optics (reflection, refraction, lenses).
- Chemistry: atomic structure, metals and non-metals, chemical reactions, acids-bases-salts, carbon compounds.
- Biology: cell theory, nutrition, respiration, reproduction, nervous and endocrine systems, disease and immunity.
- Use Class 9 and 10 NCERT as the primary source; supplement with RRB-specific science question banks.
Mathematics (25 Qs in CBT-2):
Number systems, percentages, profit-loss, simple-compound interest, ratio-proportion, time-speed-distance, time and work, algebra, geometry, trigonometry (basic), statistics (mean, median, mode). Standard Class 10 board-level mathematics.
Part B (your ITI/Diploma trade):
Study your trade textbook from NCVT/AICTE. 35% is the bar โ but scoring 60%+ in Part B is achievable and eliminates any stress about a borderline.
CBAT preparation tips
The CBAT is where well-prepared candidates are eliminated for lack of specific practice:
Vigilance test: 60โ90 minute sessions tracking a moving target or detecting anomalies in a stream of symbols. Practice: sustained attention exercises, track a cricket match ball-by-ball without distractions. The skill is not intelligence โ it is the ability to maintain concentration during monotony.
Depth perception: practice judging which of two objects on screen is "in front." RDSO (Research Designs and Standards Organisation) releases sample CBAT papers โ these are the most reliable practice material. Available on the RRB official websites.
Memory sub-test: sequences of symbols, numbers or positions shown briefly, then recalled. Practice with digit-span exercises and memory apps. Flashcard drills for sequences help.
Personality/anxiety: answer honestly. These tests are validated and include validity scales (lie-detector sub-questions). Overthinking or trying to appear "ideal" often produces an inconsistent profile that is flagged.
Indicative salary and career
ALP basic pay: โน19,900โโน35,400 (7th CPC Pay Level 2). Add DA, HRA (varies by city, 8โ27% of basic), transport allowance, and a Running Allowance of approximately 10โ12% of basic pay for every kilometre operated. Entry in-hand salary: roughly โน30,000โโน35,000 per month. After 5โ8 years on promotion to Loco Pilot Mail/Express: approximately โน50,000โโน60,000 in-hand. Senior positions on premier trains (Rajdhani, Vande Bharat) command additional incentives.
Job security, pension (NPS), medical facilities (Railway hospitals), and concessional railway travel make the total compensation package substantially better than the basic salary suggests.
Why it matters: a loco pilot is responsible for hundreds of lives and crores of rupees of cargo on every run. The selection process is deliberately multi-stage and medical-heavy because the job demands sustained alertness, physical fitness, and technical competence simultaneously โ understanding this explains why the CBAT and A-1 medical are designed as they are, and helps you prepare for the right things.
Real-world example: the CBAT vigilance test mimics the job exactly. A loco pilot on a long goods run between Nagpur and Itarsi may stare down an empty, straight track for 200 km yet must react within 2โ3 seconds to a caution or stop signal. The test deliberately creates that boredom-then-alertness demand. Practising sustained focus is not just exam preparation โ it is direct vocational training.
Common misconception: that clearing CBT-1 and CBT-2 is enough to get the job. It is not. Roughly one-third of written-exam qualifiers are eliminated at the CBAT or the A-1 medical. A candidate who tops CBT-2 but fails even one CBAT sub-test, or whose unaided vision is 6/9 instead of 6/6, is rejected. Plan for all four stages from day one.
- โ- ALP selection has four stages: CBT-1 (qualifying), CBT-2 Part A+B (merit + qualifying), CBAT (psychometric, ALP-specific), DV + Medical (A-1).
- โ- CBT-2 is merit-deciding; General Science (40 Qs) carries the most weight โ study Class 10 NCERT thoroughly.
- โ- Part B is trade-specific and qualifying at 35% โ your ITI/Diploma trade determines which paper you write.
- โ- The CBAT is unique to ALP (not Technician); every sub-test must be passed independently.
- โ- Medical A-1 requires 6/6 unaided vision and correct red-green colour discrimination โ glasses do not help.
- โ- Eligibility requires Class 10 + relevant ITI or an engineering diploma/degree in the notified streams.
- โ- Running Allowance adds ~10โ12% to effective pay; total in-hand entry salary โ โน30,000โโน35,000.
"4 Stages: Write, Trade, Mind, Body" โ CBT-1/CBT-2 = Written knowledge; Part B = Trade skill; CBAT = Mind/aptitude; Medical = Body fitness. All four gates must be opened.
- โ- ALP is the assistant who drives the locomotive; a clear promotion ladder leads to top express trains.
- โ- There are four distinct hurdles โ written marks alone do not secure the job.
- โ- General Science and the trade paper dominate CBT-2; prepare from NCERT and your ITI textbook.
- โ- The A-1 medical and CBAT are decisive; check your eyesight and begin CBAT practice before the written exam.
RRB ALP: Strategy โ Overview
RRB ALP (Assistant Loco Pilot) is a multi-stage exam. Knowing the exact structure and cut-off logic is worth several marks, because it tells you where to spend your 60 minutes.
Selection stages
- CBT-1 (screening) โ 75 questions, 60 minutes.
- CBT-2 โ Part A (merit) + Part B (qualifying trade test).
- CBAT (Computer Based Aptitude Test) โ ALP candidates only.
- Document Verification & Medical.
CBT-1 blueprint (75 Q / 60 min)
| Subject | Questions |
|---|---|
| Mathematics | 20 |
| General Intelligence & Reasoning | 25 |
| General Science | 20 |
| General Awareness & Current Affairs | 10 |
Negative marking: 1/3 mark deducted per wrong answer.
CBT-2 blueprint
- Part A: 100 questions / 90 minutes โ Mathematics 25, Reasoning 25, Basic Science & Engineering 40, General Awareness 10. This decides merit.
- Part B: 75 questions / 60 minutes โ trade-based, qualifying only (35% to pass).
Exam Tricks & Tips
- ๐ฏ Reasoning is the biggest CBT-1 block (25 Q) and has no formulas โ attempt it first for quick, safe marks.
- ๐ฏ With 1/3 negative marking, skip a question only if you can't eliminate at least two options.
- ๐ฏ Target General Science and GA early; they are recall-based and cost little time.
- ๐ฏ Keep Maths for a middle slot โ 45 seconds per question average; move on if stuck.
- ๐ฏ Part B is only qualifying (35%) โ prepare your trade to clear it, don't over-invest beyond that.
- โ Common mistake: guessing blindly under negative marking โ random guessing lowers your net score.
Expected exam pattern
Normalised scoring across shifts; sectional speed matters more than any single subject. A balanced 55โ60 accurate attempts in CBT-1 typically clears the screening in most zones.
Quick recap
CBT-1: 75 Q/60 min (Maths 20, Reasoning 25, Science 20, GA 10), 1/3 negative. CBT-2 Part A is merit, Part B is a 35% qualifying trade test. Lead with Reasoning and Science, guess only when you can eliminate options.
RRB ALP: Strategy โ Flashcards
Cover the answer, recall, then check. 10 cards on RRB ALP exam structure and strategy.
Q1. CBT-1 total questions and time?
A1. 75 questions in 60 minutes.
Q2. CBT-1 subject-wise split?
A2. Maths 20, Reasoning 25, General Science 20, General Awareness 10.
Q3. Negative marking in RRB ALP CBTs?
A3. 1/3 mark deducted per wrong answer.
Q4. Which CBT-1 subject has the most questions?
A4. General Intelligence & Reasoning (25).
Q5. CBT-2 Part A structure?
A5. 100 questions / 90 min โ Maths 25, Reasoning 25, Basic Science & Engineering 40, GA 10.
Q6. Is CBT-2 Part B counted in merit?
A6. No โ it is qualifying only, needing 35% to pass.
Q7. What test is unique to the ALP post after CBT-2?
A7. CBAT (Computer Based Aptitude Test).
Q8. Best first section to attempt in CBT-1 and why?
A8. Reasoning โ 25 marks, no formulas, quick accurate scoring.
Q9. When should you skip under 1/3 negative marking?
A9. When you cannot eliminate at least two options.
Q10. Final stages after CBT-2 and CBAT?
A10. Document Verification and Medical Examination.
RRB ALP Strategy โ Worked Example
Worked Example
Problem: Worked strategy: The RRB ALP selection has CBT-1 (qualifying), CBT-2 with Part A (Maths, Reasoning, Basic Science) and Part B (Trade โ qualifying, 35% needed), then a Computer-Based Aptitude Test (CBAT). How should a candidate sequence preparation, and why is Part B often a hidden trap?
Solution:
Step 1 โ Understand the stages. CBT-1 only shortlists; CBT-2 Part A decides the merit, and Part B is qualifying at 35% but is a knockout if failed.
Step 2 โ Balance effort. Because Part B (your trade) is only qualifying, many candidates ignore it โ but failing its 35% cut-off cancels an otherwise good Part A score. Secure Part B early, then maximise Part A.
Step 3 โ CBAT. Only ALP (not Technician) candidates sit the CBAT (psychometric aptitude), which is qualifying at T-score 42 in each of five tests. Practise it in the final phase.
Step 4 โ Weekly split. Maths + Reasoning daily for merit; two sessions/week on trade theory to lock the 35%; CBAT practice in the last month.
Answer: Lock the qualifying Part B (35%) and CBAT early, then push Part A for merit; never neglect the trade paper.
- โ- CBT-2 Part A builds merit; Part B is qualifying (35%) but a knockout if missed.
- โ- Only ALP candidates face the CBAT (T-score 42 needed in each of 5 tests).
- โ- A common failure is a strong Part A wasted by an unattended trade paper.