Train Driver Assessment Tools

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Group Bourdon

The Group Bourdon test is a commonly used assessment for aspiring train drivers, designed to measure sustained attention and accuracy under time pressure. It involves scanning rows of dots and crossing through each group of 4 while avoiding mistakes.

On test day, you’ll have 10 minutes in total, with each section lasting 2 minutes. Achieving a balance between speed and accuracy is crucial: going too fast can lead to errors, while going too slowly might keep you from completing enough lines. Feedback from many candidates suggests that aiming for eight or nine correctly completed lines—without any omissions—is a solid benchmark for passing under standard criteria.

Although there may be a small margin for error, aiming for 100% accuracy is the safest strategy. If you find yourself making mistakes, it’s better to slow your pace slightly rather than risk unnecessary errors. Ultimately, consistent focus and a steady rhythm are key to succeeding on the Group Bourdon test.

Click here to access our FREE Group Bourdon practice material

Sustained Concentration and Attention Test (SCAAT)

The SCAAT is an essential part of the recruitment process for London Underground train operators but is increasingly used by mainline railway companies as an additional test, measuring your ability to focus on repetitive and detailed tasks under time pressure. This skill is critical for safe and efficient train operation, ensuring that drivers can maintain attention over extended periods while identifying specific patterns or anomalies.

Overview of the Test
The SCAAT consists of three sub-tests, each progressively increasing in complexity. Candidates are required to identify specific target shapes or patterns within a block of shapes, working systematically from top to bottom and left to right. Accuracy and speed are equally important, as both contribute to your final score.

Test 1: Identify and mark a single target shape across the rows.
Test 2: Identify and mark two target shapes simultaneously within the same rows.
Test 3: Identify two target shapes, where the first shape remains constant, and the second target changes with each row (always the first shape in that row).

Key Strategies for Success
Maintain Focus: Avoid distractions and approach the task with a clear mind. Concentration is vital throughout the test.
Find the Right Speed: Strike a balance between working quickly and maintaining accuracy. Completing fewer rows with no mistakes is better than rushing and accumulating errors.
Practice Regularly: Familiarize yourself with the format and develop a rhythm by using practice materials. Repeated attempts will help improve your speed and confidence.

Although it is not always necessary to complete all rows to pass, consistent accuracy is paramount. Errors like omissions or marking incorrect shapes can significantly impact your score. Candidates who perform well typically demonstrate a high level of precision while maintaining a steady pace.

Click here to access our FREE SCAAT practice material