This guide will teach you how to identify and locate groups of dots on your screen. It has been packed with hundreds of different sample questions, and useful tips, to help prepare you for your train driver assessment test. Using Dots Concentration, you can ensure that you have practised and are confident enough to take any train driver assessment exam. We have inserted multiple hours worth of questions and answers, which will test your ability to concentrate under pressure. If you are an aspiring train driver, this book will provide you with the best pre-test knowledge and experience available, and is as close as it gets to the real thing. By the end of our guide you will be accurate, efficient, and ready to take your train driver assessment exam.