Computer Based Aptitude Test (AT) is the test held only for the candidates who have opted for ALP. The candidate needs to secure a minimum score of 42 marks in each of the test batteries to qualify. This is applicable to all the candidates and no relaxation is permissible.
CBT III will consist of test batteries. Each test has a separate time limit and will be provided at the time of the examination. There will be no negative marking in the Computer Based Aptitude Test III. THe Aptitude Test has been designed to critically assess the candidates ability(strengths and weaknesses) to perform in work fields where safety and attention to details is crucial. [RRB ALP CBT III - Psycho Aptitude Test - Exam Pattern & Question Types]

✦ Candidates equal to 8 times number of ALP vacancies for each of the communities i.e. UR, OBC-NCL, SC and ST (including ExSM) shall be short listed for Computer Based Aptitude Test (based on their performance in Part A of the Second Stage CBT subject to their qualifying the Part B of Second Stage CBT) from among the candidates who have opted for the post of ALP. Such shortlisted candidates should produce the Vision Certificate in the prescribed format as per Annexure – VI [Click Here] in original during Computer Based AT, failing which they will not be permitted to appear in the Computer Based AT.
✦ Candidates will have to qualify in each of the test battery of Computer Based AT for considering them for the post of ALP. The Computer Based Aptitude Test shall have questions and answer options only in English and Hindi. There shall be no negative marking in Computer Based AT.
✦ The ALP merit list will be drawn only from amongst the candidates qualifying in the Aptitude Test, with 70% weightage for the marks obtained in the Part A of Second Stage CBT and 30% weightage for the marks obtained in Computer Based AT.
✦ Candidates are advised to visit websites of RDSO (www.rdso.indianrailways.gov.in → Directorates → Psycho Technical Directorate → Candidates Corner) for question patterns and other details of AT.

Generally there are 5 test batteries in the Psycho Aptitude Test as described below. [RRB ALP CBT III - Psycho Aptitude Test - Exam Pattern & Question Types]
1. Memory Test - Aptitude Test for Measuring Memory

The candidates will have to memorize Picture-Number combinations and have to indicate the numbers on the test page.

The candidates will have to memorize structures/stations/visual patterns/visual objects and have to identify their locations in the test page.

2. Following Directions - Aptitude Test to Measure the Ability to Follow Directions

Candidates will be given a pattern of letters followed by questions about how certain directions will change in that pattern.

The answer to each question will be one of the letters in the pattern

3. Depth Perception - Aptitude Test to Measure Depth Perception.

Candidates will be given a pile of bricks on the screen with labels such as A, B, C,..

The candidate will have to count the number of bricks that are touching bricks of the pile that has a letter on it.

Note: The bricks will be of same size & shape.
4. Concentration Test - Aptitude Test to Measure Concentration.

Candidates will be tested on their ability to compare numbers i.e. to decide if they are the same or not.

If the numbers are same, the candidate has to click "Y" else "N".

5. Perceptual Speed Test - Aptitude Test to Measure Perceptual Speed.

Candidates will be tested on their agile ability. i.e. how quickly can they see objects to match them later accurately.