How to Use Track Priority Markers

The information in this Wiki Page applies to TANE, TRS19, Trainz Plus and TRS22.

Track Priority Marks are purple coloured track markers that are invisible in Driver but visible in Surveyor. They are used to direct specific trains under AI control through the track section where they are placed They only work on AI controlled trains. They have no effect on manually controlled trains The direction that the marker is pointing has NO EFFECT on its operation Track Priority Marks are used with Priority Levels that are assigned to each train

What are Track Priority Markers?

	Track Priority Markers are track markers that are invisible in Driver but visible in Surveyor
	They match the Priority Level assigned to AI consists with the level assigned to the marker on the track to decide if the consist is allowed to use that section of track
	Priority Levels have no set meanings but can be assigned to specific AI trains to force them through selected sections of track (the sections are defined as the track between consecutive junctions)

Priority Marks are used to assign different levels of Priority to track sections. Trains under AI control that have:- the same Priority Level as the track will, under normal conditions‡, be directed along that track a different Priority Level as the track will, under normal conditions‡, be directed away from that track ‡ assuming that there are no conflicting driver commands or movements A better way of thinking about the meaning of Priority is to use the word Preference instead of "Priority". Preference indicates a choice between different paths while Priority is often mistakenly taken to mean importance

Route or Session?

Priority Marks can be placed in a Route Layer or in a Session Layer

Notes: Placing Priority Marks in a Route layer (e.g. in the same layer as the track) means that they will be available in all Sessions created using that particular Route Placing Priority Marks in a Session layer means that they will only be available in that Session. This can be useful if two or more Sessions are being created and you want to use different Priority Marks in each Session

Information on Route and Session layers can be found at:- How to Use Layers

Adding a Track Priority Marker

Notes: A Priority Mark has one important property:- its Priority Level (1, 2 or 3) which is used to decide which consists can move along the track containing the marker ...and one lesser property:- its Trigger Effect Radius The direction that a Priority Mark is pointing has NO EFFECT on its operation. Likewise, its name is not required for any operation but can be useful for locating it in a route

In Surveyor Classic (S10)

Adding a Priority Mark (S10)

Steps: To add a Priority Mark:- Open the Tracks Tool Flyout or press the  F4  key Left Click on the Trackmark button or press the  V  key Left Click on the Track Priority Marker Left Click the  +  Add button - it may already be selected - or press the  A  key Left Click on the track location where the priority marker is to be placed This will place the Track Priority Marker on the track and open its properties window. Left Click the default Priority value shown to select one 1, 2 or 3. Each Left Click will cycle to the next value

Immediately after the Priority Mark has been placed its properties window will appear. You can:- Set the Priority Level for the Priority Mark, Enter a Name for the Priority Mark, and if needed, select a Layer and a Bound Layer - see the Trainz Wiki Page  How to Use layers for the details

Set the Priority Mark Effect Radius (S10)

At the bottom of the Track Tools flyout menu is an Advanced button. Left Click this button to open the advanced tools.

The Effect Radius sets the size of green "effect wings" attached both ends of the marker. It has no effect on its operation but allows you to keep its "visibility" clear of other track objects such as junctions and other markers.

Steps: To set a Priority Mark Effect Radius:- In the Track Tools flyout, Left Click on the Advanced button to open the Radius tools and properties. You will have a choice of 4 methods to set and adjust the Effect Radius Options: Choose one of:- To copy the Effect Radius of an existing Priority Mark Left Click the Get Effect Radius icon Left Click on the Priority Mark whose radius you want to copy - the radius will be copied into the Effect Radius Value text box (the default value is 20.00 metres) To apply the new value see option below To manually alter the Effect Radius value Type the new value (in metres) into the Effect Radius Value text box To apply the new value see option below To apply a value in the Effect Radius Value text box (from methods , or ) to another Priority Mark Left Click the Copy Radius Value icon Left Click on the Priority Mark that is to receive the new value (you can click on more than one) To adjust the Effect Radius value up or down Left Click the Adjust Effect Radius button Select the Priority Mark Left Click and Drag Forward (to increase the value) or Backward (to reduce the value) The new value will be immediately applied to the selected Priority Mark as the mouse moves (but only one Priority Mark at a time)

Once you have an Effect Radius entered in the value box, you can apply it to any number of Priority Marks by using method shown above

In Surveyor 2.0 (S20)

Surveyor 2.0 is currently only available for Trainz Plus and TRS22 Platinum.

Adding a Priority Mark (S20)

In the Asset Palette either:-

Left Click on the Track Mesh Filter icon

OR

Left Click on the Content Drop-down Box Then select Track Objects

Notes: If the Assets Palette is not shown on the screen, then:- Steps: To display palettes:- open the Window Menu from the menu icons at the top of the screen   visible palettes have ticks next to their names invisible (hidden) palettes have no ticks next to their names if the Assets Palette, or any required palette, does not have a tick next to its name then Left Click on the name of the palette or on the empty box next to its name. This will add a and make the palette visible There is a Trainz Wiki Page specifically covering the S20 Palettes at  How to Use the Surveyor 2.0 Palettes

Shortcut  If you already have a Priority Mark placed in your route then:- move the tool pointer over the existing priority marker object and hold down the  Alt  key. The object name will appear in a ToolTip attached to the pointer  Alt  + Left Click (hold down the  Alt  key and Left Click on the priority mark to identify it in the Assets Palette and to select the Placement Tool. Release the key. Jump to Step below.

To narrow down the filter list, type "mark" (UPPER/lower case does not matter) in the Search Text Box

This will list all the Track Objects containing the text "mark" in the filter list. Left Click on the item name AI Routing Priority Marker. If you are not sure about an asset then Double Left Click on the name to bring up its image and description.

Place the Priority Mark on the track.

Notes: To add a priority mark, or any object, you will need to select the Placement Tool To edit a priority mark once it has been placed you will usually use either the Free Move Tool or the Fine Adjustment Tool

Steps: To add a priority mark:- Select the Placement Tool (or press the  E  key) from the Tools Palette Left Click on the track at the position where you want to place the Priority Mark Once placed a Priority Mark can be easily moved if needed. Notes: To delete a Priority Mark (or any asset):- Steps: select either the:- Free Move Tool (or press  S ) OR Fine Adjustment Tool (or press  D ) Left Click on the Priority Mark press the  Delete  key

If you need to rotate the Priority Mark to face the opposite direction then:- Steps: select the Priority Mark and Left Click on its Context Menu Icon (or press the  T  key) from the popup menu select the  Rotate Trackside  option Note: the direction it faces has no effect on its operation

Set its Priority Level (S20)

The Priority Level is the ONLY important property of a Priority Mark. Its possible values are 1, 2 and 3.

Steps: To set its Priority Level:- Left Click on its Context Menu Icon (or press the  T  key if the object has already been selected) From the popup Context Menu select  Edit Properties  In the Script Properties section, Left Click on the Priority number to cycle through the possible values

Change Its Name (S20)

The name of the marker is only useful for finding it in the route. It is not used for any operational purpose.

Steps: To change the name of a Priority Mark:- using either the Free Move Tool or the Fine Adjustment Tool select (Left Click on) the Direction Mark to be renamed in the Info Palette (you may need to make this palette visible - see the Notes: for Step  1  above) Left Click in the Name: entry box. Enter a name for the Priority Mark and press the  Enter  key

Set its Effect Radius (S20)

The Effect Radius sets the size of green "effect wings" attached both ends of the marker. It has no effect on its operation but allows you to keep its "visibility" clear of other track objects such as junctions and other markers.

Steps: To adjust the effect radius of a Priority Mark:- Left Click and Drag Forward or Backward on the Yellow Dot next to the Priority Mark to increase or reduce its Trigger Radius Notes: The effect of a Priority Mark only applies between the two junctions on each side of the marker. As long as its radius (default value is 20m) fits between the two junctions it will not affect any other track sections. The only situation where changing the radius could be important is when the distance between the two junctions is smaller than the marker trigger radius. There is no advantage in increasing the radius beyound its default value.

Move a Priority Mark Along the Track (S20)

Priority Marks can be moved along the track or to other tracks.

Steps: To move the Priority Mark:- Left Click and Drag Forward or Backward on the Yellow Dot next to the Priority Mark to move it along the track or to another track

Move the Priority Mark Vertically (S20)

Priority Marks can be physically placed above (or below) the track. This feature allows them to be placed, for example, above the track so that they will not be hidden in Surveyor if a consist is parked on a marker.

Steps: To move a Priority Mark vertically:- This option is only available with the Fine Adjustment Tool - the  D  key Left Click and Drag Forward or Backward on the  Blue  Vertical Axis Line above the Priority Mark to it up or down If you need to return the Priority Mark to its original position then:- Steps: To correctly reattach the Priority Mark to the track:- select the object and open (Left Click on) its Context Menu Icon (or press the  T  key) from the popup menu select  Reattach to Track

Move the Priority Mark Horizontally (S20)

Priority Marks can be physically placed left or right alongside the track. This feature allows them to be placed, for example, beside the track so that they will not be hidden in Surveyor if a consist is parked on a marker.

Steps: To move a Priority Mark horizontally:- This option is only available with the Fine Adjustment Tool - the  D  key Left Click and Drag Forward or Backward on the  Red  Horizontal Axis Line attached to the Priority Mark to move it left or right Left Click and Drag Forward or Backward on the  Green  Horizontal Axis Line attached to the Priority Mark to move it forward or back If you need to return the Priority Mark to its original position then:- Steps: To correctly reattach the Priority Mark to the track:- select the object and open (Left Click on) its Context Menu Icon (or press the  T  key) from the popup menu select  Reattach to Track

Notes: The  Green  Horizontal Axis Line shown as in the image pointing forward from the Priority Mark will move it forward/backward regardless of whether it is on the track or not. It has the same effect as Move a Priority Mark Along the Track. However, by using this tool it is possible to move the Priority Mark beyond the end of the track if that is ever required.

Assign a Priority Marker to a New Layer (S20)

The Info Palette will show the layer assigned to the currently selected object. To the left of the layer name is a small arrowhead object.

Steps: To assign a Priority Mark to a layer:- In the Info Palette:- Left Click the small arrowhead next to the layer name. This will open the layer properties for the selected object Left Click the Layer drop down box to select a new layer for the object if required, Left Click the Binding drop down box to select a new binding layer for the object. It cannot be bound to its own layer if required, Left Click the  Lock Layer  button to lock the selected layer. If the layer is already locked then this will be shown as an  Unlock Layer  button WARNING: You will not be allowed to place a track object in a layer that is higher up the list than the layer containing the track Moving an object from one layer group to another (e.g. from the Route Layer Group to the Session Layer Group) will change where the object is saved (in the Route or in the Session) Information on layers can be found at:- How to Use Layers

Assigning Priority Levels to Trains

A higher priority level does not mean that one consist is more important than another. A priority 1 consist will not be given first access to a junction, for example, or be the first one to depart. The priority levels have no set meaning beyond what you decide they will mean.

Notes: Every locomotive (and its consist) must have a Priority Level of 1, 2 or 3. The default priority level of every locomotive is 2. You cannot assign NO Priority to a locomotive Setting the priority level of any wagon in a consist will set the priority level of ALL the wagons (including the loco) to the same value

For example you could assign priority 1 to express trains and 3 to slow general "all stops" freight trains, or you could assign priority 3 to express trains and 1 to slow general "all stops" freight trains, it is up to you. These values will not alter the speed or importance of these trains but will only decide which paths they should take.

Surveyor Classic (S10)

To assign a priority level to a consist.

Steps: To assign a priority level to a consist:- Open the Trainz Flyout tool (the  F7  key) Left Click on the  ?  (Properties button) Left Click on any rolling stock object in the selected consist Setting the Priority Level of one rolling stock object (wagon, loco) in a consist will set ALL the rolling stock objects in the consist to the same Priority Level In T:ANE and TRS19:- Left Click on the Train Priority value - each click will cycle through the values 1, 2, 3. The default priority level for all consists is 2 Left Click the icon to accept the change In Surveyor Classic for Trainz Plus and TRS22:- Left Click on the Priority value to open a drop down menu. Select the required Priority Level of 1, 2 or 3 Left Click the  Save Changes  button to accept the change

Surveyor 2.0 (S20)

Surveyor 2.0 is currently only available for Trainz Plus and TRS22 Platinum.

To assign a priority level to a consist.

Steps: To assign a priority level to a consist:- select either the:- the Free Move Tool (press the  S  key), OR the Fine Adjustment Tool (press the  D  key) Left Click on any rolling stock object in the selected consist Setting the Priority Level of one rolling stock object (wagon, loco) in a consist will set ALL the rolling stock objects in the consist to the same Priority Level Left Click on the Context Menu Icon (shown in the image on the left or press the  T  key) to open up the objects control menu Left Click on the  Edit Properties  option in the popup menu Left Click on the Priority value to open a drop down menu. Select the required Priority Level of 1, 2 or 3 Left Click the  Save Changes  button to accept the change

Priority Marker Operation

	Priority Marks only work on AI controlled trains. They have no effect on manually controlled trains
	Priority Marks force a AI trains that with the same priority level into taking the path containing the marker
	AI trains will ignore a path containing a Priority Mark that does not match its own priority level unless that path is also the shortest available
	If the specified path is blocked, then the AI will ignore the Priority Mark and find another path
	The direction that the Priority Mark is pointing has NO effect on its operation

Consider the situations represented in the diagrams below. Three trains - Red, Green, Yellow - have been given priority levels of 1, 2 and 3 as shown. Each is given the driver command Drive to Trackmark or Navigate to Trackmark. The destination trackmark is shown on the right. In Figure 1 below, no Track Priority Markers have been set. All three trains will take the shortest path, assuming there are no blockages. Figure 1 In Figure 2 below, a Track Priority Marker has been placed on the top loop line and has been given a priority level of 1. The red train (priority level 1) will now take the priority 1 path because it will "see" that as being the shortest of the three possible paths. The green and yellow trains (priority levels 2 and 3) will still "see" the middle path as the shortest. Figure 2 In Figure 3 below, a Track Priority Marker has been placed on the lower loop line and has been given a priority level of 3. For the same reasons as explained above, the yellow train (priority level 3) will now take the priority 3 path because it now sees that as the shortest. Figure 3 In Figure 4 below, Track Priority Markers have been placed on the upper and lower loop lines and set as shown. The red and yellow trains will take their respective loop paths while the green train is unaffected. Figure 4 An exception, shown in Figure 5 below, will occur when a Track Priority Marker path has been blocked, for example by another train under AI or manual control. In the figure the lower loop path has been blocked. The red train will take its assigned path, the green train takes its shortest path and yellow train will be forced to take what it "sees" as the next shortest path. Figure 5

Notes: An AI controlled train will not attempt to find an alternative path around a blockage if:- the Drive To driver command is used, and the blocked path is the shortest path and has the same priority value as the consist This is the normal operation of the Drive To command and is not caused by the Track Priority Markers or consist priority levels. This situation would occur with or without the use of priority levels and markers.

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Another exception, shown in Figure 6 below, will occur when a driver command overrides a Track Priority Marker. In the figure the yellow train (priority level 3) has been given the driver command Drive To Station followed by Drive to Trackmark. As the station is not on the priority 3 path, that path will be ignored to reach the station and then the trackmark. After stopping at the station the train will not reverse back onto the main line to then use the priority 3 track. Figure 6 The Special Case of Priority 2 Figure 7 below shows a situation that does not fit the points made above. A Track Priority Marker has been set to priority level 2 and placed on the lower loop. The green train has been given the command to drive to the trackmark but ignores its assigned priority 2 path and proceeds via the shortest actual path. Track that has not been assigned a Track Priority Marker will have a default priority level of 2. In this situation, the green train "sees" two paths that match its priority level so it takes the path that is the actual shorter of the two. Figure 7 Track Priority Markers can also be used to direct trains away from specific paths. Figure 8 below shows how this can be done. A Track Priority Marker set to priority level 1 has been positioned on the shortest physical path. This will block all trains of priority level 2 and 3 from using that path - they will see it as the longest available path. A second Track Priority Marker set to priority level 3 has been positioned on the 2nd shortest physical path. This will block all trains of priority level 1 and 2 from using that path. The end result is that the green train (priority level 2) has only one path available - the longest physical path. Figure 8 The situation shown in Figure 8 above only works up to a point. Figure 9 below shows what will happen when ALL paths are set to a blocking priority level. The green train (priority level 2) will ignore all the priority markers and choose its own shortest path. Track Priority Markers will only make a path *look* longer or shorter. When all paths have conflicting priorities to an AI train, then the AI will go back to selecting the actual shortest physical path. Figure 9

Modifying Train Priority Levels

The Priority Level of a consist in Driver can be altered manually or automatically

Manually in Driver

This can be done "on the fly" using the mouse.

Steps: To edit a consists Priority Level in Driver:-  Ctrl  + Right Click (hold down the  Ctrl  key and Right Click) on the locomotive or on any of the wagons in the consist Setting the Priority Level of one rolling stock object (wagon, loco) in a consist will set ALL the rolling stock objects in the consist to the same Priority Level Left Click on the  View Details  option from the popup menu Depending on your version of Trainz, choose between:- T:ANE, TRS19 and TRS22:- Left Click on the Train Priority value - each click will cycle through the values 1, 2, 3. The default priority level for all consists is 2 Left Click the icon to accept the change In Trainz Plus and TRS22 Platinum:- Left Click on the Priority value to open a drop down menu. Select the required Priority Level of 1, 2 or 3 Left Click the  Save Changes  button to accept the change

OR

Using the Session Editor

This can be done in Surveyor in the Session Editor Driver Setup Rule

Steps: To edit a consists Priority Level in the Session Editor:- Open the Session Editor - this is found as Edit Session in the T:ANE Surveyor Main Menu and in the TRS19 (and later version) Edit Menu Left Click on the Driver Setup Rule then Left Click on the  Edit  button Insert the command Priorityz at the appropriate place in the Driver Command Bar for the selected Driver and set it to the new level The command Priorityz must be downloaded from the DLS and installed in your copy of Trainz

Information on adding driver commands can be found on the Trainz Wiki Page at:- How to Use the Driver Setup Rule

Track Priority in Map View

In Surveyor when using Map View or zooming the camera right out, the tracks will be shown colour coded according to their assigned track priority level. If the track layout shown in Figure 4 above, with the priority markers as used in that figure, was shown in Map View then this would be the result. Tracks that have not been given a priority marker will be shown as dark blue indicating that they have the default priority level 2.

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Trainz Wiki

More Tutorials and Guides to Using Trainz How to Guides Driver Commands List Session Rules List (Alphabetical) with Parameters Session Rules List (Categories) With Parameters

Related Links How to Use Track Direction Markers How to Use Track Markers How to Use Track Triggers

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This page was created by Trainz user pware in September 2019 and was last updated as shown below.

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