diff -r 95909be228c2 src/rail.h
--- a/src/rail.h    Fri Dec 09 21:27:22 2016 +0000
+++ b/src/rail.h    Sat Dec 10 13:42:05 2016 +0100
@@ -113,7 +113,8 @@
 /**
  * This struct contains all the info that is needed to draw and construct tracks.
  */
-struct RailtypeInfo {
+class RailtypeInfo {
+public:
    /**
     * Struct containing the main sprites. @note not all sprites are listed, but only
     *  the ones used directly in the code
diff -r 95909be228c2 src/rail_cmd.cpp
--- a/src/rail_cmd.cpp  Fri Dec 09 21:27:22 2016 +0000
+++ b/src/rail_cmd.cpp  Sat Dec 10 13:42:05 2016 +0100
@@ -47,8 +47,6 @@
 RailType _sorted_railtypes[RAILTYPE_END];
 uint8 _sorted_railtypes_size;

-assert_compile(sizeof(_original_railtypes) <= sizeof(_railtypes));
-
 /** Enum holding the signal offset in the sprite sheet according to the side it is representing. */
 enum SignalOffsets {
    SIGNAL_TO_SOUTHWEST,
@@ -66,8 +64,11 @@
  */
 void ResetRailTypes()
 {
-   memset(_railtypes, 0, sizeof(_railtypes));
-   memcpy(_railtypes, _original_railtypes, sizeof(_original_railtypes));
+   assert_compile(lengthof(_original_railtypes) <= lengthof(_railtypes));
+
+   uint i = 0;
+   for (; i < lengthof(_original_railtypes); i++) _railtypes[i] = _original_railtypes[i];
+   for (; i < lengthof(_railtypes);          i++) _railtypes[i] = RailtypeInfo(); // zero-init
 }

 void ResolveRailTypeGUISprites(RailtypeInfo *rti)
@@ -151,11 +152,8 @@

        if (rti->label == 0) {
            /* Set up new rail type */
-           memcpy(rti, &_railtypes[RAILTYPE_RAIL], sizeof(*rti));
+           *rti = _railtypes[RAILTYPE_RAIL];
            rti->label = label;
-           /* Clear alternate label list. Can't use Reset() here as that would free
-            * the data pointer of RAILTYPE_RAIL and not our new rail type. */
-           new (&rti->alternate_labels) RailTypeLabelList;

            /* Make us compatible with ourself. */
            rti->powered_railtypes    = (RailTypes)(1 << rt);