Index: trunk/src/org/openstreetmap/josm/corrector/ReverseWayTagCorrector.java
===================================================================
--- trunk/src/org/openstreetmap/josm/corrector/ReverseWayTagCorrector.java	(revision 12186)
+++ trunk/src/org/openstreetmap/josm/corrector/ReverseWayTagCorrector.java	(revision 12187)
@@ -142,7 +142,7 @@
             if (key.startsWith("oneway") || key.endsWith("oneway")) {
                 if (OsmUtils.isReversed(value)) {
-                    newValue = OsmUtils.trueval;
+                    newValue = OsmUtils.TRUE_VALUE;
                 } else if (OsmUtils.isTrue(value)) {
-                    newValue = OsmUtils.reverseval;
+                    newValue = OsmUtils.REVERSE_VALUE;
                 }
                 newKey = COMBINED_SWITCHERS.apply(key);
@@ -264,5 +264,5 @@
     static Map<OsmPrimitive, List<TagCorrection>> getTagCorrectionsMap(Way way) {
         Map<OsmPrimitive, List<TagCorrection>> tagCorrectionsMap = new HashMap<>();
-        List<TagCorrection> tagCorrections = getTagCorrections((Tagged) way);
+        List<TagCorrection> tagCorrections = getTagCorrections(way);
         if (!tagCorrections.isEmpty()) {
             tagCorrectionsMap.put(way, tagCorrections);
Index: trunk/src/org/openstreetmap/josm/data/osm/OsmUtils.java
===================================================================
--- trunk/src/org/openstreetmap/josm/data/osm/OsmUtils.java	(revision 12186)
+++ trunk/src/org/openstreetmap/josm/data/osm/OsmUtils.java	(revision 12187)
@@ -12,4 +12,7 @@
 import org.openstreetmap.josm.tools.TextTagParser;
 
+/**
+ * Utility methods/constants that are useful for generic OSM tag handling.
+ */
 public final class OsmUtils {
 
@@ -21,7 +24,32 @@
             .asList("reverse", "-1"));
 
-    public static final String trueval = "yes";
-    public static final String falseval = "no";
-    public static final String reverseval = "-1";
+    /**
+     * A value that should be used to indicate true
+     * @since 12186
+     */
+    public static final String TRUE_VALUE = "yes";
+    /**
+     * A value that should be used to indicate false
+     * @since 12186
+     */
+    public static final String FALSE_VALUE = "no";
+    /**
+     * A value that should be used to indicate that a property applies reversed on the way
+     * @since 12186
+     */
+    public static final String REVERSE_VALUE = "-1";
+
+    /**
+     * Discouraged synonym for {@link #TRUE_VALUE}
+     */
+    public static final String trueval = TRUE_VALUE;
+    /**
+     * Discouraged synonym for {@link #FALSE_VALUE}
+     */
+    public static final String falseval = FALSE_VALUE;
+    /**
+     * Discouraged synonym for {@link #REVERSE_VALUE}
+     */
+    public static final String reverseval = REVERSE_VALUE;
 
     private OsmUtils() {
@@ -29,4 +57,11 @@
     }
 
+    /**
+     * Converts a string to a boolean value
+     * @param value The string to convert
+     * @return {@link Boolean#TRUE} if that string represents a true value,
+     *         {@link Boolean#FALSE} if it represents a false value,
+     *         <code>null</code> otherwise.
+     */
     public static Boolean getOsmBoolean(String value) {
         if (value == null) return null;
@@ -37,4 +72,11 @@
     }
 
+    /**
+     * Normalizes the OSM boolean value
+     * @param value The tag value
+     * @return The best true/false value or the old value if the input cannot be converted.
+     * @see #TRUE_VALUE
+     * @see #FALSE_VALUE
+     */
     public static String getNamedOsmBoolean(String value) {
         Boolean res = getOsmBoolean(value);
@@ -42,12 +84,27 @@
     }
 
+    /**
+     * Check if the value is a value indicating that a property applies reversed.
+     * @param value The value to check
+     * @return true if it is reversed.
+     */
     public static boolean isReversed(String value) {
         return REVERSE_VALUES.contains(value);
     }
 
+    /**
+     * Check if a tag value represents a boolean true value
+     * @param value The value to check
+     * @return true if it is a true value.
+     */
     public static boolean isTrue(String value) {
         return TRUE_VALUES.contains(value);
     }
 
+    /**
+     * Check if a tag value represents a boolean false value
+     * @param value The value to check
+     * @return true if it is a true value.
+     */
     public static boolean isFalse(String value) {
         return FALSE_VALUES.contains(value);
Index: trunk/src/org/openstreetmap/josm/data/validation/tests/TagChecker.java
===================================================================
--- trunk/src/org/openstreetmap/josm/data/validation/tests/TagChecker.java	(revision 12186)
+++ trunk/src/org/openstreetmap/josm/data/validation/tests/TagChecker.java	(revision 12187)
@@ -762,8 +762,8 @@
                     } else if ("BOOLEAN_TRUE".equals(n)) {
                         valueBool = true;
-                        value = OsmUtils.trueval;
+                        value = OsmUtils.TRUE_VALUE;
                     } else if ("BOOLEAN_FALSE".equals(n)) {
                         valueBool = true;
-                        value = OsmUtils.falseval;
+                        value = OsmUtils.FALSE_VALUE;
                     } else {
                         value = n.startsWith("/") ? getPattern(n) : n;
Index: trunk/src/org/openstreetmap/josm/gui/tagging/presets/items/Check.java
===================================================================
--- trunk/src/org/openstreetmap/josm/gui/tagging/presets/items/Check.java	(revision 12186)
+++ trunk/src/org/openstreetmap/josm/gui/tagging/presets/items/Check.java	(revision 12187)
@@ -23,7 +23,7 @@
     public String locale_text; // NOSONAR
     /** the value to set when checked (default is "yes") */
-    public String value_on = OsmUtils.trueval; // NOSONAR
+    public String value_on = OsmUtils.TRUE_VALUE; // NOSONAR
     /** the value to set when unchecked (default is "no") */
-    public String value_off = OsmUtils.falseval; // NOSONAR
+    public String value_off = OsmUtils.FALSE_VALUE; // NOSONAR
     /** whether the off value is disabled in the dialog, i.e., only unset or yes are provided */
     public boolean disable_off; // NOSONAR