# Tutorial Exercise 4

## Exercise Information

A station receives a passenger every 10 seconds. This passenger checks in for 10 seconds and waits in line to get on the next subway. The subway arrives every 1000 seconds, wait for 60 seconds at the station and has a capacity of 40 passengers per trip. The destination is 1 kilometer away and, when passengers arrive, they have to check out, which lasts 10 seconds. The Stations have a capacity of 40 passengers and is interesting to know the number of passengers waiting outside de initial station, as well as the number of passengers that arrived at the destination.

## Step 1 Creating objects

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

• Create one SourceTrain.
• Create four Rails.
• Connect SourceTrain to the Rail1 (using the A key) and then connect Rail1 to Rail2, Rail2 to Rail3 and Rail3 to Rail4 via proximity.
• On the Rail3, set "Virtual Distance" to true and set the value to 1000, meaning 1000 meters or 1 kilometer.
• Create two RailControlPoints and put one on Rail2 and one on Rail4. The RailControlPoints should change color if they are connected correctly to the Rails. We recommend the creation of the RailControlPoints in a empty space and, after that, you can place it on the Rails.
• Create two Stations using the Passenger Station model and connect the central port of each one to a RailControlPoint (using the S key).
• On both Stations, set "Max Weight" to 40, "Units Per FlowItem" to 1 and "FlowItem Class" to Man.
• Create one Queue and connect it to the Station on Rail2 (using the A key). On Statistics, in the properties menu, pin the Content > Line Chart on a New Dashboard to know the number of passengers waiting outside the initial station.
• Create one Processor and connect it to the Queue (using the A key).
• Create one Source and connect it to the Processor (using the A key), set its "Inter-Arrivaltime" to 10 and the "FlowItem Class" to Man.
• Create one Processor and connect the Station on Rail4 to it (using the A key).
• Create a Sink and connect the final Processor to it (using the A key). On Statistics, in the properties menu, pin the "Throughput" on the Dashboard already created to know the total number of passengers that arrived.
• Create a Sink and put it next to Rail4, no need to connect it.

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 processflow tasks:

• Create a Inter-Arrival Source.
• Create a "CreateTrain" activity.
• Create a "MoveTrain" activity.
• Create a "MoveTrain" activity.
• Create a "DestroyTrain" activity.
• Create a Sink.

Your processflow should be looking like this: