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Setting have been substantially re-organised since this last had a major update

Advanced Settings window: Construction section

The Construction section allows you to set various options related to construction and terraforming. The purpose of the available settings is explained below. For each setting, the respective variable from the config file is listed with it's possible values.

Contents 1 Advanced Settings window: Construction section 1.1 Signals 1.1.1 Show signals on the drive side 1.1.2 Enable the signal GUI 1.1.3 When dragging, place signals every 1.1.4 Automatically build semaphores before 1.1.5 Signal type to build by default 1.1.6 Cycle through signal types 1.2 Allow building on slopes and coasts 1.3 Allow landscaping under buildings, tracks, etc. (autoslope) 1.4 Allow removal of more town-owned buildings, roads, bridges, etc 1.5 Maximum bridge length 1.6 Maximum tunnel length 1.7 Airports never expire 1.8 Enable terraforming the tiles at the map borders 1.9 In game placement of trees 2 In previous versions 2.1 Always allow small airports 2.2 Allow building very long bridges 2.3 See also

The Construction section of the Advanced Settings window (1.3.1)

Signals

Show signals on the drive side

Whether signals are shown on the side that road vehicles drive on or the opposite.

Possible Settings: On or Off

In Openttd.cfg config file: ([construction] signal_side = <true|false>)

Enable the signal GUI

With this patch enabled, clicking on the signal button will result in the opening of an extra signal toolbar, which allows you to pick certain types of signal (semaphore, light signal, Signals) directly without having to cycle trough them using the CTRL-key. Using CTRL to select your signal types is still possible when this patch is enabled.

Possible Settings: On or Off

In Openttd.cfg config file: ([gui] enable_signal_gui = <true|false>)

When dragging, place signals every

When using the "Autorail" style of dragging signals (or when autocompleting signals using ctrl+drag), you can set their density (place on every Xth tile) with this setting. The number of empty track squares is equal to the set value minus one.

Possible Settings: 1 tile to 20 tiles

In Openttd.cfg config file: ([gui] drag_signal_density = <num_val>)

Automatically build semaphores before

Makes semaphores (old style signaling) the default placed signals until the year you have configured in this patch.

Possible Settings: 0 to 5,000,000

In Openttd.cfg config file: ([gui] semaphore_build_before = <year>)

Signal type to build by default

Set the type of signal to be built by default when using the signal tool. Choose between block signals, path signals and one-way path signals. If the signal GUI is enabled, this type of signal is selected by default.

Possible Settings: Block signals, Path signals or One-way path signals

In Openttd.cfg config file: ([gui] default_signal_type = <0-2>)

Cycle through signal types

Set which type of signal should be cycled through when ctrl-clicking on a ready-built signal. Choose between cycling through all signal types, just the block signals types or only the path signals types.

Possible Settings: Block signals only, Path signals only or All

In Openttd.cfg config file: ([gui] cycle_signal_types = <0-2>)

Allow building on slopes and coasts

Normally you can only build tracks and roads on slopes parallel to the incline, with this setting enabled you can build nearly everything on a slope with foundations being built automatically.

Possible Settings: On or Off

In Openttd.cfg config file: ([construction] build_on_slopes = <true|false>)

Allow landscaping under buildings, tracks, etc. (autoslope)

This patch makes the terraforming restrictions far less severe and allows you to terraform under objects, where you normally would need to remove the object first. Note that canals and some NewGRF objects will still prevent foundations from being changed around them even with this setting enabled.

Possible Settings: On or Off

In Openttd.cfg config file: ([construction] autoslope = <true|false>)

Allow removal of more town-owned buildings, roads, bridges, etc

The town’s attitude is more lenient towards you removing their property.

Possible Settings: On or Off

In Openttd.cfg config file: ([construction] extra_dynamite = <true|false>)

Maximum bridge length

Allows you to specify longest bridge length, longer than originally intended. Replaced "Allow very long bridges".

Note: With some NewGRFs, depending on the current year, building too long a bridge will throw an error even though the target bridge length is shorter than this setting's value.

Maximum tunnel length

Allows you to specify longest tunnel length, as above. No previous similar feature.

Airports never expire

Airports may have an expiry year, similar to engines. Expired airports can't be built any more. With this option enabled, airports never expire.

This option has been renamed from Always allow small airports in r16614.

Possible Settings: On or Off

In Openttd.cfg config file: ([station] never_expire_airports = <true|false>)

Enable terraforming the tiles at the map borders

With this enabled, the map isn't required to have water all around it and allows you to terraform the map's edges just like any place elsewhere. Selecting this feature also provides an extra set of buttons in the map generator to select the type of edge (water/freeform) for each side of the map.

Possible Settings: On or Off

In Openttd.cfg config file: ([construction] freeform_edges = <true|false>)

In game placement of trees

With this option, you can enable/disable the in-game generation of trees.

Possible Settings: none (breaks lumber mill), only in rain forests or everywhere

In Openttd.cfg config file: ([construction] extra_tree_placement = <0-2>)

In previous versions

Always allow small airports

Small airports are not removed from the airport construction list when large airports appear. With this option disabled, you no longer can build small airports as soon as larger airports become available.

This option has been renamed to Airports never expire in r16614.

Possible Settings: On or Off

In Openttd.cfg config file: ([station] always_small_airport = <true|false>)

Allow building very long bridges

Allowed you to build very long bridges. Now it is replaced with custom maximum bridge and tunnel length setting.

Possible Settings: On or Off

In Openttd.cfg config file: ([construction] longbridges = <true|false>)

See also

• For 0.3.0 to 0.6.3 - See Configuring patches for information of how to change settings.
• For 0.2.0 and 0.2.1 - See Configuring patches in 0.2.0.