TurnType:
| "arriving_idx"
| "arriving_left_idx"
| "arriving_right_idx"
| "arriving_via_idx"
| "arriving_via_left_idx"
| "arriving_via_right_idx"
| "bear_keep_left_idx"
| "bear_keep_right_idx"
| "continue_idx"
| "exit_left_idx"
| "exit_right_idx"
| "ferry_idx"
| "roundabout45_idx"
| "roundabout90_idx"
| "roundabout135_idx"
| "roundabout180_idx"
| "roundabout225_idx"
| "roundabout270_idx"
| "roundabout315_idx"
| "roundabout360_idx"
| "roundabout_neg45_idx"
| "roundabout_neg90_idx"
| "roundabout_neg135_idx"
| "roundabout_neg180_idx"
| "roundabout_neg225_idx"
| "roundabout_neg270_idx"
| "roundabout_neg315_idx"
| "roundabout_neg360_idx"
| "roundabout_generic_idx"
| "roundabout_neg_generic_idx"
| "sharp_turn_left_idx"
| "sharp_turn_right_idx"
| "turn_left_idx"
| "turn_right_idx"
| "uturn_left_idx"
| "uturn_right_idx"
| "icon_inv_idx"
| "icon_idx_cnt"
| number