Tutorial Exercise 6.1

Exercise Information

Two trains travel on a single track, on opposite directions. The track has a single lane and the two trains destination is on the other side of the track. Increment the main model by adding a detour, allowing both trains to avoid collision and reach their destination.

Step 1 Track Layout

To create the track layout, follow the steps below:

• Drag 5 Rail objects to the model and connect them on a straight line.
• Drag 2 Locomotives and connect them to opposite ends of the track using the "A" key.
• Create 2 RailControlPoints at each end of the track.

Your model should be looking like this:

Step 2 Processflow Configuration

In order to achieve the solution for the problem, you should create the following objects:

• Create two Schedule Sources, configure them to release 1 train at time 0.
• Create two AssignLabel, set the label name as "train" and the value as each respective locomotive.
• Create two MoveTrains, set one for each Train.
• Configure the MoveTrains to have the RailControlPoints as destination, on opposite sides.

Your Processflow should be looking like this:

Step 3 Collision Detection & Analysis

The first step to set collision detection is to drag any RailWorks object to model and create a RailSystem.

To access the collision settings, follow the steps:

• Drag one Rail to the model.
• Access the RailSystem properties and mark the "Train Collision" checkbox.
• Proceed to set up a collision detection tick in milliseconds, 50 ms is a good startpoint.
• With these steps, collision detection is now activated.
• Run the model and identify the exact point where the trains collide.

Step 4 Mandatory Paths

In order to avoid the collision, do the following modification.

• Create a detour on the collision Rail, using 3 Rails.
• Connect them to create an alternative route to avoid traffic.
• Alter one of the MoveTrain activity by ticking the "Use Mandatory Rails" checkbox.
• Alter one of the MoveTrain activities to have the paralel detour rail as a MandatoryRail.

The MoveTrain activity should be similar to the image below.

Your model should be looking like this: