Headcodes

A headcode is a unique 4 character code used to identify one train from another. Headcodes have 3 parts, for example, 2M05.

1. The first part is the train classification. For this example headcode, the number 2 means this train is an ordinary passenger train.
2. The second part is a letter used to indicate the train's destination. For this headcode, the letter M means the train is heading to Masonfield.
3. The third part is two randomly generated numbers used to distinguish between specific trains running the same service. Note that there is currently no system to prevent two trains from sharing the same headcode, although this is very unlikely to occur.

Destinations

The letters used for each destination are as follows:

Letter	Destination	Restrictions
A	Ashburn	None
C	Dovedale Central	None
E	Dovedale East	None
F	Fanory Mill	None
G	Gleethrop End	None
H	Cosdale Harbour	None
J	Glassbury Junction	Electric trains prohibited
M	Masonfield	None
Q	Test/Measurement Train	Staff only
S	Satus	Only ECS to sidings may terminate
W	Mazewood	Electric trains prohibited
Z	Reserved for special use	Staff only

Train Classifications

Headcode	Train Class	Is Line Clear? Bell Code
1	Express passenger train Nominated postals or parcels train Breakdown train or snow plough train going to clear the line (1Z99) Traction unit going to assist failed train (1Z99)	4
2	Ordinary passenger train Officers special train (2Z01) Test train (2Qxx)	3-1
3	Freight train if specially authorized A parcels train An autumn-railhead treatment train Empty coaching stock train if specially authorized	Not in use
4	Freight train that can run up to 75mph (120km/h)	Not in use
5	Empty coaching stock train	2-2-1
6	Freight train that can run up to 60mph (95km/h)	5
7	Freight train that can run up to 45mph (70km/h)	Not in use
8	Freight train that can run up to 30mph (55km/h)	Not in use
9	Specially authorised train	1-4
0	Locomotive or locomotive	2-3