Optic Flow Tutorial

In Optic Flow you will take the role of a driver. While driving down the road various hazards or other vehicles will obstruct your path. Your task is to assess if you are going to collide with a hazard, while also spotting other objects you are supposed to be aware of and looking for.


Here is how Optic Flow works:

  1. When you click START you will begin moving along the road. You need to be aware of two things:
    1. Road Signs that will show in different colours and shapes on the overhead sign such as the yellow triangle below:

    2. Hazards on the road that you may collide with such as:

  2. Once you click START quickly note the shape and colour that is displayed on the overhead sign and click/touch on the object with the same shape and colour. It could be placed on another car approaching you or on the side road signs as you see in the example below.

  3. In parallel, you have to keep an eye on hazards on the road.
  4. If you come across an obstacle/hazard that is about to hit you, press the Spacebar to strike it. If however, you don’t think that the hazard will hit your car, just ignore it and don’t press the Spacebar. Careful: If you press the space bar when an obstacle/hazard is NOT likely to hit you, it will be respected as an incorrect response. As a driver, it’s important to train yourself and assess this correctly.

More useful information:

  1. In this exercise, you have a limited time to respond.
  2. You can also try the step by step instructions by clicking the ‘i’ button at the bottom right corner of the exercise screen shown below.

    Note: When you try an exercise in a new level, the instruction mode is on by default. The way you can tell whether you are in instruction mode or exercise mode is to note the orange-color banner on top of the exercise screen which looks like the one below. You can always click on the ‘i’ to toggle between instruction mode and exercise mode.

  3. As you progress, the exercise will grow more challenging in the following ways:

    • Shapes on vehicles become increasingly alike.
    • Driving conditions change, making it increasingly harder to avoid hazards and identify target shapes. As with real-world driving, the speed driven must be reduced to successfully navigate the changing daylight and weather conditions.
    • Type and number of hazards differ.
    • Exercise adapts to your performance by reducing the time given to track down the target shape.
    • Moving from the desert to the suburbs, and on to the city scene, the backgrounds become more of a distraction and complex.
  4. Control buttons are found at the bottom right of the exercise screen. You can use these buttons to do the following:

    • If at any time you wish to repeat the Instructions on a particular exercise, push the’ i’ button.
    • If at any time you need to Exit an exercise, push the X button.
    • If at any time you wish to Pause the exercise, push the II button.
    • If you want to make the exercise Full screen for easier viewing, push Full screen button.

  5. You may also visit the following page to learn more about this exercise