Index: src/lang/english.txt
===================================================================
--- src/lang/english.txt	(revision 11044)
+++ src/lang/english.txt	(working copy)
@@ -3374,3 +3374,9 @@
 STR_PROSPECT_NEW_INDUSTRY                                       :{BLACK}Prospect
 STR_BUILD_NEW_INDUSTRY                                          :{BLACK}Build
 STR_INDUSTRY_SELECTION_HINT                                     :{BLACK}Choose the appropriate industry from this list
+
+#### Vehicle speeds tab
+STR_WAGON_SPEEDS												:{BLACK}Speeds
+STR_WAGON_SPEEDS_TOOLTIP										:{BLACK}Show engine and wagons speeds
+STR_WAGON_SPEEDS_VELOCITY										:{LTBLUE}{VELOCITY}
+STR_WAGON_SPEEDS_VELOCITY_NO_LIMIT								:{LTBLUE}No limit
\ No newline at end of file
Index: src/train_gui.cpp
===================================================================
--- src/train_gui.cpp	(revision 11044)
+++ src/train_gui.cpp	(working copy)
@@ -152,7 +152,38 @@
 	}
 }
 
+/**
+ * Vehicle speeds detail.
+ * It displays the maximum speed of the vehicle according the GRF settings and patch options
+ * @param *v Vehicle to display
+ * @param x Coordinate (horizontal) of the string to display
+ * @param y Coordinate (vertical) of the string to display
+ * @author Magicbuzz
+ */
+static void TrainDetailsSpeedsTab(const Vehicle *v, int x, int y)
+{
+	/** Vehicle max speed is found from the general vehicle information, not the vehicle itself */
+	const RailVehicleInfo *rvi = RailVehInfo(v->engine_type);
 
+	/**
+	 * Wagons can have max speed only when the wagon_speed_limits is set and not using wagon override to reflect the
+	 * value the vehicle actually uses.
+	 * @see train_cmd.cpp TrainConsistChanged(Vehicle* v)
+	 */
+	if ((rvi->railveh_type != RAILVEH_WAGON || _patches.wagon_speed_limits) && !UsesWagonOverride(v)) {
+		uint16 speed = GetVehicleProperty(v, 0x09, rvi->max_speed) * 10 / 16; ///< GRF speeds are in MPH while OTTD uses KMPH
+		if (speed > 0) {
+			/** Max speed is set, so we display it */
+			SetDParam(0, speed);
+			DrawStringRightAligned(x, y, STR_WAGON_SPEEDS_VELOCITY, 0);
+		} else {
+			/** Max speed is not set, so we display "no limit" */
+			DrawStringRightAligned(x, y, STR_WAGON_SPEEDS_VELOCITY_NO_LIMIT, 0);
+			//DrawString(x, y, STR_WAGON_SPEEDS_VELOCITY_NO_LIMIT, 0);
+		}
+	}
+}
+
 static void DrawTrainDetailsWindow(Window *w)
 {
 	byte det_tab = WP(w, traindetails_d).tab;
@@ -167,7 +198,7 @@
 
 	num = 0;
 	u = v = GetVehicle(w->window_number);
-	if (det_tab == 3) { // Total cargo tab
+	if (det_tab == 4) { // Total cargo tab
 		for (CargoID i = 0; i < lengthof(act_cargo); i++) {
 			act_cargo[i] = 0;
 			max_cargo[i] = 0;
@@ -235,8 +266,8 @@
 	y = 57;
 	sel = w->vscroll.pos;
 
-	/* draw the first 3 details tabs */
-	if (det_tab != 3) {
+	/* draw the first 4 details tabs */
+	if (det_tab != 4) {
 		x = 1;
 		for (;;) {
 			if (--sel < 0 && sel >= -w->vscroll.cap) {
@@ -263,7 +294,8 @@
 							TrainDetailsInfoTab(v, px, py);
 						}
 						break;
-					case 2: TrainDetailsCapacityTab(v, px, py); break;
+					case 2: TrainDetailsSpeedsTab(v, 100, py); break;
+					case 3: TrainDetailsCapacityTab(v, px, py); break;
 				}
 				y += 14;
 
@@ -327,12 +359,14 @@
 		/* details buttons*/
 		case 9:  // Cargo
 		case 10: // Information
-		case 11: // Capacities
-		case 12: // Total cargo
+		case 11: // Speeds
+		case 12: // Capacities
+		case 13: // Total cargo
 			EnableWindowWidget(w,  9);
 			EnableWindowWidget(w, 10);
 			EnableWindowWidget(w, 11);
 			EnableWindowWidget(w, 12);
+			EnableWindowWidget(w, 13);
 			EnableWindowWidget(w, e->we.click.widget);
 			WP(w,traindetails_d).tab = e->we.click.widget - 9;
 			SetWindowDirty(w);
@@ -368,10 +402,11 @@
 { WWT_PUSHTXTBTN, RESIZE_TB,     14,   0,  10, 140, 145, STR_0188,             STR_884D_INCREASE_SERVICING_INTERVAL},
 { WWT_PUSHTXTBTN, RESIZE_TB,     14,   0,  10, 146, 151, STR_0189,             STR_884E_DECREASE_SERVICING_INTERVAL},
 {      WWT_PANEL, RESIZE_RTB,    14,  11, 369, 140, 151, 0x0,                  STR_NULL},
-{ WWT_PUSHTXTBTN, RESIZE_TB,     14,   0,  89, 152, 163, STR_013C_CARGO,       STR_884F_SHOW_DETAILS_OF_CARGO_CARRIED},
-{ WWT_PUSHTXTBTN, RESIZE_TB,     14,  90, 178, 152, 163, STR_013D_INFORMATION, STR_8850_SHOW_DETAILS_OF_TRAIN_VEHICLES},
-{ WWT_PUSHTXTBTN, RESIZE_TB,     14, 179, 268, 152, 163, STR_013E_CAPACITIES,  STR_8851_SHOW_CAPACITIES_OF_EACH},
-{ WWT_PUSHTXTBTN, RESIZE_RTB,    14, 269, 357, 152, 163, STR_013E_TOTAL_CARGO, STR_8852_SHOW_TOTAL_CARGO},
+{ WWT_PUSHTXTBTN, RESIZE_TB,     14,   0,  71, 152, 163, STR_013C_CARGO,       STR_884F_SHOW_DETAILS_OF_CARGO_CARRIED},
+{ WWT_PUSHTXTBTN, RESIZE_TB,     14,  72, 142, 152, 163, STR_013D_INFORMATION, STR_8850_SHOW_DETAILS_OF_TRAIN_VEHICLES},
+{ WWT_PUSHTXTBTN, RESIZE_TB,     14, 143, 213, 152, 163, STR_WAGON_SPEEDS, STR_WAGON_SPEEDS_TOOLTIP},
+{ WWT_PUSHTXTBTN, RESIZE_TB,     14, 214, 285, 152, 163, STR_013E_CAPACITIES,  STR_8851_SHOW_CAPACITIES_OF_EACH},
+{ WWT_PUSHTXTBTN, RESIZE_RTB,    14, 286, 357, 152, 163, STR_013E_TOTAL_CARGO, STR_8852_SHOW_TOTAL_CARGO},
 {  WWT_RESIZEBOX, RESIZE_LRTB,   14, 358, 369, 152, 163, 0x0,                  STR_RESIZE_BUTTON},
 {   WIDGETS_END},
 };