Userpages - Hermann (hermannk) → Commuter Train Avoid Deadlock

Foreword 1:
This documentation was created with this: Status 03/29/2023

Foreword 2:
- the use of this solution is at your own risk;
- Regular backups of the Rocrail workspace are recommended.

A commuter service between two stations should run randomly and continuously.
Four locomotives are to run for a total of five station blocks.
In this solution example there are:
- two blocks in the branch station (on the left);
- three blocks in the main station (on the right).


Particularities:
- two blocks are planned between the stations;
- no locomotives should get stuck in the intermediate blocks;
- a change of direction in the intermediate blocks is not permitted.

Likewise, a locomotive should only drive to the neighboring station if a block is free there.

The intermediate blocks "bk03" and "bk04" are combined into a "block group" and are given the attribute "critical section".

This ensures that only one locomotive enters the block group from one side.
For more details see blockgroups-en

A locomotive should only start driving if it finds a free block in the destination station.
To do this, "Conditions" are defined for the block group:

- Travel from right to left (ENTER block "bk04"): at least one block in the secondary station must be free; ("bk01" or "bk02")
- Travel from left to right (ENTER block "bk03"): at least one block in the main station must be free; ("bk05", "bk06" or "bk07")
For more details see blockgroups-cond-en

The download work area " commutertrainavoiddeadlock.zip" contains the following files:

back to the Solution Details.

You are welcome to implement your own ideas on the basis of this solution.
Have fun and good luck.