case 0x45: { // Curvature info

			/* Format: xxxTxBxF

			 * F - previous wagon to current wagon, 0 if vehicle is first

			 * B - current wagon to next wagon, 0 if wagon is last

			 * T - previous wagon to next wagon, 0 in an S-bend

			 */

			if (v->type != VEH_TRAIN) return 0;

			const Vehicle *u_p = GetPrevVehicleInChain(v);

			const Vehicle *u_n = v->next;

			DirDiff f = (u_p == NULL) ?  DIRDIFF_SAME : DirDifference(u_p->direction, v->direction);

			DirDiff b = (u_n == NULL) ?  DIRDIFF_SAME : DirDifference(v->direction, u_n->direction);

			DirDiff t = ChangeDirDiff(f, b);

			return ((t > DIRDIFF_REVERSE ? t | 8 : t) << 16) |

			       ((b > DIRDIFF_REVERSE ? b | 8 : b) <<  8) |

			       ( f > DIRDIFF_REVERSE ? f | 8 : f);

		}