Add 'transferParametersForMode' build config field

application/src/main/java/org/opentripplanner/graph_builder/module/TransferParameters.java

@@ -0,0 +1,68 @@
+package org.opentripplanner.graph_builder.module;
+
+import java.time.Duration;
+import org.opentripplanner.utils.tostring.ToStringBuilder;
+
+/**
+ * Mode-specific parameters for transfers.
+ */
+public record TransferParameters(
+  Duration maxTransferDuration,
+  Duration carsAllowedStopMaxTransferDuration,
+  boolean disableDefaultTransfers
+) {
+  public static final Duration DEFAULT_MAX_TRANSFER_DURATION = null;
+  public static final Duration DEFAULT_CARS_ALLOWED_STOP_MAX_TRANSFER_DURATION = null;
+  public static final boolean DEFAULT_DISABLE_DEFAULT_TRANSFERS = false;
+
+  TransferParameters(Builder builder) {
+    this(
+      builder.maxTransferDuration,
+      builder.carsAllowedStopMaxTransferDuration,
+      builder.disableDefaultTransfers
+    );
+  }
+
+  public String toString() {
+    return ToStringBuilder
+      .of(getClass())
+      .addDuration("maxTransferDuration", maxTransferDuration)
+      .addDuration("carsAllowedStopMaxTransferDuration", carsAllowedStopMaxTransferDuration)
+      .addBool("disableDefaultTransfers", disableDefaultTransfers)
+      .toString();
+  }
+
+  public static class Builder {
+
+    private Duration maxTransferDuration;
+    private Duration carsAllowedStopMaxTransferDuration;
+    private boolean disableDefaultTransfers;
+
+    public Builder() {
+      this.maxTransferDuration = DEFAULT_MAX_TRANSFER_DURATION;
+      this.carsAllowedStopMaxTransferDuration = DEFAULT_CARS_ALLOWED_STOP_MAX_TRANSFER_DURATION;
+      this.disableDefaultTransfers = DEFAULT_DISABLE_DEFAULT_TRANSFERS;
+    }
+
+    public Builder withMaxTransferDuration(Duration maxTransferDuration) {
+      this.maxTransferDuration = maxTransferDuration;
+      return this;
+    }
+
+    public Builder withCarsAllowedStopMaxTransferDuration(
+      Duration carsAllowedStopMaxTransferDuration
+    ) {
+      this.carsAllowedStopMaxTransferDuration = carsAllowedStopMaxTransferDuration;
+      return this;
+    }
+
+    public Builder withDisableDefaultTransfers(boolean disableDefaultTransfers) {
+      this.disableDefaultTransfers = disableDefaultTransfers;
+      return this;
+    }
+
+    public TransferParameters build() {
+      return new TransferParameters(this);
+    }
+  }
+}

application/src/main/java/org/opentripplanner/graph_builder/module/configure/GraphBuilderModules.java

@@ -259,7 +259,8 @@ static DirectTransferGenerator provideDirectTransferGenerator(
       timetableRepository,
       issueStore,
       config.maxTransferDuration,
-      config.transferRequests
+      config.transferRequests,
+      config.transferParametersForMode
     );
   }
 

application/src/main/java/org/opentripplanner/standalone/config/BuildConfig.java

@@ -15,6 +15,7 @@
 import java.time.LocalDate;
 import java.time.ZoneId;
 import java.util.List;
+import java.util.Map;
 import java.util.Set;
 import java.util.regex.Pattern;
 import javax.annotation.Nullable;
@@ -23,6 +24,7 @@
 import org.opentripplanner.ext.emissions.EmissionsConfig;
 import org.opentripplanner.ext.fares.FaresConfiguration;
 import org.opentripplanner.framework.geometry.CompactElevationProfile;
+import org.opentripplanner.graph_builder.module.TransferParameters;
 import org.opentripplanner.graph_builder.module.ned.parameter.DemExtractParameters;
 import org.opentripplanner.graph_builder.module.ned.parameter.DemExtractParametersList;
 import org.opentripplanner.graph_builder.module.osm.parameters.OsmExtractParameters;
@@ -32,13 +34,16 @@
 import org.opentripplanner.model.calendar.ServiceDateInterval;
 import org.opentripplanner.netex.config.NetexFeedParameters;
 import org.opentripplanner.routing.api.request.RouteRequest;
+import org.opentripplanner.routing.api.request.StreetMode;
+import org.opentripplanner.routing.api.request.framework.DurationForEnum;
 import org.opentripplanner.routing.fares.FareServiceFactory;
 import org.opentripplanner.standalone.config.buildconfig.DemConfig;
 import org.opentripplanner.standalone.config.buildconfig.GtfsConfig;
 import org.opentripplanner.standalone.config.buildconfig.IslandPruningConfig;
 import org.opentripplanner.standalone.config.buildconfig.NetexConfig;
 import org.opentripplanner.standalone.config.buildconfig.OsmConfig;
 import org.opentripplanner.standalone.config.buildconfig.S3BucketConfig;
+import org.opentripplanner.standalone.config.buildconfig.TransferConfig;
 import org.opentripplanner.standalone.config.buildconfig.TransferRequestConfig;
 import org.opentripplanner.standalone.config.buildconfig.TransitFeedConfig;
 import org.opentripplanner.standalone.config.buildconfig.TransitFeeds;
@@ -151,6 +156,7 @@ public class BuildConfig implements OtpDataStoreConfig {
   public final IslandPruningConfig islandPruning;
 
   public final Duration maxTransferDuration;
+  public final Map<StreetMode, TransferParameters> transferParametersForMode;
   public final NetexFeedParameters netexDefaults;
   public final GtfsFeedParameters gtfsDefaults;
 
@@ -284,9 +290,10 @@ When set to true (it is false by default), the elevation module will include the
         .of("maxTransferDuration")
         .since(V2_1)
         .summary(
-          "Transfers up to this duration with the default walk speed value will be pre-calculated and included in the Graph."
+          "Transfers up to this duration with a mode-specific speed value will be pre-calculated and included in the Graph."
         )
         .asDuration(Duration.ofMinutes(30));
+    transferParametersForMode = TransferConfig.map(root, "transferParametersForMode");
     maxStopToShapeSnapDistance =
       root
         .of("maxStopToShapeSnapDistance")

application/src/main/java/org/opentripplanner/standalone/config/buildconfig/TransferConfig.java

@@ -0,0 +1,44 @@
+package org.opentripplanner.standalone.config.buildconfig;
+
+import static org.opentripplanner.standalone.config.framework.json.OtpVersion.V2_7;
+
+import java.util.EnumMap;
+import java.util.Map;
+import org.opentripplanner.graph_builder.module.TransferParameters;
+import org.opentripplanner.routing.api.request.StreetMode;
+import org.opentripplanner.standalone.config.framework.json.NodeAdapter;
+
+public class TransferConfig {
+
+  public static Map<StreetMode, TransferParameters> map(NodeAdapter root, String parameterName) {
+    return root
+      .of(parameterName)
+      .since(V2_7)
+      .summary("Configures mode-specific properties for transfer calculations.")
+      .description(
+        """
+This field enables configuring mode-specific parameters for transfer calculations.
+To configure mode-specific parameters, the modes should also be used in the `transferRequests` field in the build config.
+
+**Example**
+
+```JSON
+// build-config.json
+{
+  "transferParametersForMode": {
+    "CAR": {
+      "disableDefaultTransfers": true,
+      "carsAllowedStopMaxTransferDuration": "3h"
+    },
+    "BIKE": {
+      "maxTransferDuration": "30m",
+      "carsAllowedStopMaxTransferDuration": "3h"
+    }
+  }
+}
+```
+"""
+      )
+      .asEnumMap(StreetMode.class, TransferParametersMapper::map, new EnumMap<>(StreetMode.class));
+  }
+}

application/src/main/java/org/opentripplanner/standalone/config/buildconfig/TransferParametersMapper.java

@@ -0,0 +1,67 @@
+package org.opentripplanner.standalone.config.buildconfig;
+
+import static org.opentripplanner.standalone.config.framework.json.OtpVersion.V2_7;
+
+import org.opentripplanner.graph_builder.module.TransferParameters;
+import org.opentripplanner.standalone.config.framework.json.NodeAdapter;
+
+public class TransferParametersMapper {
+
+  public static TransferParameters map(NodeAdapter c) {
+    TransferParameters.Builder builder = new TransferParameters.Builder();
+    builder.withMaxTransferDuration(
+      c
+        .of("maxTransferDuration")
+        .summary("This overwrites the default `maxTransferDuration` for the given mode.")
+        .since(V2_7)
+        .asDuration(TransferParameters.DEFAULT_MAX_TRANSFER_DURATION)
+    );
+    builder.withCarsAllowedStopMaxTransferDuration(
+      c
+        .of("carsAllowedStopMaxTransferDuration")
+        .summary(
+          "This is used for specifying a `maxTransferDuration` value to use with transfers between stops which are visited by trips that allow cars."
+        )
+        .description(
+          """
+This parameter configures additional transfers to be calculated for the specified mode only between stops that have trips with cars.
+The transfers are calculated for the mode in a range based on the given duration.
+By default, these transfers are not calculated unless specified for a mode with this field.
+
+Calculating transfers only between stops that have trips with cars can be useful with car ferries, for example.
+Using transit with cars can only occur between certain stops.
+These kinds of stops require support for loading cars into ferries, for example.
+The default transfers are calculated based on a configurable range (configurable by using the `maxTransferDuration` field)
+which limits transfers from stops to only be calculated to other stops that are in range.
+When compared to walking, using a car can cover larger distances within the same duration specified in the `maxTransferDuration` field.
+This can lead to large amounts of transfers calculated between stops that do not require car transfers between them.
+This in turn can lead to a large increase in memory for the stored graph, depending on the data used in the graph.
+
+For cars, using this parameter in conjunction with `disableDefaultTransfers` allows calculating transfers only between relevant stops.
+For bikes, using this parameter can enable transfers between ferry stops that would normally not be in range.
+In Finland this is useful for bike routes that use ferries near the Turku archipelago, for example.
+"""
+        )
+        .since(V2_7)
+        .asDuration(TransferParameters.DEFAULT_CARS_ALLOWED_STOP_MAX_TRANSFER_DURATION)
+    );
+    builder.withDisableDefaultTransfers(
+      c
+        .of("disableDefaultTransfers")
+        .summary("This disables default transfer calculations.")
+        .description(
+          """
+The default transfers are calculated based on a configurable range (configurable by using the `maxTransferDuration` field)
+which limits transfers from stops to only be calculated to other stops that are in range.
+This parameter disables these transfers.
+A motivation to disable default transfers could be related to using the `carsAllowedStopMaxTransferDuration` field which only
+calculates transfers between stops that have trips with cars.
+For example, when using the `carsAllowedStopMaxTransferDuration` field with cars, the default transfers can be redundant.
+"""
+        )
+        .since(V2_7)
+        .asBoolean(TransferParameters.DEFAULT_DISABLE_DEFAULT_TRANSFERS)
+    );
+    return builder.build();
+  }
+}

application/src/test/java/org/opentripplanner/generate/doc/framework/NodeAdapterHelper.java

@@ -15,6 +15,7 @@ public class NodeAdapterHelper {
     new AnchorAbbreviation("od.", "osmDefaults."),
     new AnchorAbbreviation("lfp.", "localFileNamePatterns."),
     new AnchorAbbreviation("u.", "updaters."),
+    new AnchorAbbreviation("tpfm.", "transferParametersForMode."),
     new AnchorAbbreviation("0.", "[0]."),
     new AnchorAbbreviation("1.", "[1].")
   );