I was a bit concerned about the hazard perception test before I sat the theory exam. Originally, I was planning to buy the offical hazard perception DVD. Based on the reviews on this item, I decided to buy this item for its hazard perception training but it contains everything I need for both theory and practical tests. For the hazard perception training, the DVD contains 23 interactive videos to demonstrate the potential hazards in different circumstances. It gives me very good ideas when to click and how to score the marks. Besides, it has 15 mock hazard perception tests in DVD and contain some tips for the exam. Without the 23 practice, I would hardly understand why I need to click the screen so early when some hazards were well ahead. Of course, I passed my theory exam in my first attempt and thank for this DVD. I highly recommend this item and it is definitely worth more than its value.