diff --git a/nrel/hive/dispatcher/instruction/instructions.py b/nrel/hive/dispatcher/instruction/instructions.py
index d4129e89..57610e5b 100644
--- a/nrel/hive/dispatcher/instruction/instructions.py
+++ b/nrel/hive/dispatcher/instruction/instructions.py
@@ -21,6 +21,7 @@
 from nrel.hive.state.vehicle_state.dispatch_trip import DispatchTrip
 from nrel.hive.state.vehicle_state.idle import Idle
 from nrel.hive.state.vehicle_state.repositioning import Repositioning
+from nrel.hive.state.vehicle_state.out_of_service import OutOfService
 from nrel.hive.state.vehicle_state.reserve_base import ReserveBase
 from nrel.hive.state.vehicle_state.servicing_pooling_trip import ServicingPoolingTrip
 from nrel.hive.util.exception import SimulationStateError, InstructionError
@@ -341,3 +342,22 @@ def apply_instruction(
         next_state = ReserveBase.build(self.vehicle_id, self.base_id)
 
         return None, InstructionResult(prev_state, next_state)
+
+
+@dataclass(frozen=True)
+class OutOfServiceInstruction(Instruction):
+    vehicle_id: VehicleId
+
+    def apply_instruction(
+        self, sim_state: SimulationState, env: Environment
+    ) -> Tuple[Optional[Exception], Optional[InstructionResult]]:
+        vehicle = sim_state.vehicles.get(self.vehicle_id)
+        if not vehicle:
+            msg = (
+                f"vehicle {self.vehicle_id} not found; context: applying out of service instruction"
+            )
+            return (SimulationStateError(msg), None)
+
+        prev_state = vehicle.vehicle_state
+        next_state = OutOfService.build(self.vehicle_id)
+        return None, InstructionResult(prev_state, next_state)
diff --git a/nrel/hive/model/roadnetwork/link_id.py b/nrel/hive/model/roadnetwork/link_id.py
index 45dc1783..b8df5b73 100644
--- a/nrel/hive/model/roadnetwork/link_id.py
+++ b/nrel/hive/model/roadnetwork/link_id.py
@@ -1,6 +1,4 @@
-from ast import literal_eval
 from typing import Optional, Tuple, Any
-
 from nrel.hive.util.typealiases import LinkId
 
 NodeId = Any
@@ -39,14 +37,36 @@ def extract_node_ids(
         )
     else:
         try:
-            src = literal_eval(result[0])
-            dst = literal_eval(result[1])
+            src = str(result[0])
+            dst = str(result[1])
         except ValueError:
             return Exception(f"LinkId {link_id} cannot be parsed."), None
 
         return None, (src, dst)
 
 
+def extract_node_ids_int(link_id: LinkId) -> Tuple[Optional[Exception], Optional[Tuple[int, int]]]:
+    """node ids can be strings for the haversine case but for networkx graphs they must be
+    integers as they are treated as indices.
+
+    :param link_id: link id to read
+    :type link_id: LinkId
+    :return: _description_
+    :rtype: Tuple[Optional[Exception], Optional[Tuple[int, int]]]
+    """
+    err, ids = extract_node_ids(link_id)
+    if err is not None or ids is None:
+        return err, None
+    else:
+        try:
+            src_str, dst_str = ids
+            src = int(src_str)
+            dst = int(dst_str)
+            return None, (src, dst)
+        except ValueError as e:
+            return e, None
+
+
 def reverse_link_id(
     link_id: LinkId,
 ) -> Tuple[Optional[Exception], Optional[LinkId]]:
diff --git a/nrel/hive/model/roadnetwork/osm/osm_roadnetwork.py b/nrel/hive/model/roadnetwork/osm/osm_roadnetwork.py
index afa7a541..dd683505 100644
--- a/nrel/hive/model/roadnetwork/osm/osm_roadnetwork.py
+++ b/nrel/hive/model/roadnetwork/osm/osm_roadnetwork.py
@@ -10,7 +10,7 @@
 
 from nrel.hive.model.entity_position import EntityPosition
 from nrel.hive.model.roadnetwork.link import Link
-from nrel.hive.model.roadnetwork.link_id import extract_node_ids
+from nrel.hive.model.roadnetwork.link_id import extract_node_ids_int
 from nrel.hive.model.roadnetwork.osm.osm_builders import osm_graph_from_polygon
 from nrel.hive.model.roadnetwork.osm.osm_road_network_link_helper import OSMRoadNetworkLinkHelper
 from nrel.hive.model.roadnetwork.osm.osm_roadnetwork_ops import (
@@ -50,6 +50,7 @@ def __init__(
         # validate network
 
         #   road network must be strongly connected
+        log.info(f"testing graph connectivity")
         if not nx.is_strongly_connected(graph):
             raise RuntimeError("Only strongly connected graphs are allowed.")
 
@@ -66,6 +67,7 @@ def _valid_node_id(nid: Union[int, tuple]) -> bool:
             raise TypeError("all node ids must be either an integer or a tuple of integers")
 
         #   check to make sure the graph has the right information on the links
+        log.info(f"testing graph speed data")
         missing_speed = 0
         missing_time = 0
         for u, v, d in graph.edges(data=True):
@@ -98,6 +100,7 @@ def _valid_node_id(nid: Union[int, tuple]) -> bool:
             )
 
         # build tables on the network edges for spatial lookup and LinkId lookup
+        log.info(f"building spatial index for graph")
         link_helper_error, link_helper = OSMRoadNetworkLinkHelper.build(
             graph, sim_h3_resolution, default_speed_kmph
         )
@@ -155,6 +158,7 @@ def from_file(
         if road_network_path.suffix == ".json":
             with road_network_path.open("r") as f:
                 graph = nx.node_link_graph(json.load(f))
+                log.info(f"loaded graph with {len(graph.edges)} edges")
             return OSMRoadNetwork(graph, sim_h3_resolution, default_speed_kmph)
         else:
             raise TypeError(
@@ -188,8 +192,8 @@ def _astar_cost_heuristic(source, dest) -> float:
 
         # start path search from the end of the origin link, terminate search at the start of the
         # destination link
-        extract_src_err, src_nodes = extract_node_ids(origin.link_id)
-        extract_dst_err, dst_nodes = extract_node_ids(destination.link_id)
+        extract_src_err, src_nodes = extract_node_ids_int(origin.link_id)
+        extract_dst_err, dst_nodes = extract_node_ids_int(destination.link_id)
         if extract_src_err:
             log.error(extract_src_err)
             return empty_route()
diff --git a/nrel/hive/model/station/station.py b/nrel/hive/model/station/station.py
index 71f0cff4..f5f3b9b7 100644
--- a/nrel/hive/model/station/station.py
+++ b/nrel/hive/model/station/station.py
@@ -70,7 +70,7 @@ def geoid(self) -> GeoId:
     @classmethod
     def build(
         cls,
-        id: StationId,
+        station_id: StationId,
         geoid: GeoId,
         road_network: RoadNetwork,
         chargers: immutables.Map[ChargerId, int],
@@ -100,7 +100,7 @@ def _chargers(acc, charger_data):
                 charger = env.chargers.get(charger_id)
                 if charger is None:
                     msg = (
-                        f"attempting to create station {id} with charger type {charger_id} "
+                        f"attempting to create station {station_id} with charger type {charger_id} "
                         f"but that charger type has not been defined for this scenario"
                     )
                     return TypeError(msg), None
@@ -114,7 +114,7 @@ def _chargers(acc, charger_data):
         if error is not None:
             raise error
         if charger_states is None:
-            msg = f"internal error after building station chargers for station {id}"
+            msg = f"internal error after building station chargers for station {station_id}"
             raise Exception(msg)
 
         energy_dispensed = immutables.Map({energy_type: 0.0 for energy_type in EnergyType})
@@ -122,12 +122,12 @@ def _chargers(acc, charger_data):
         if position is None:
             msg = (
                 "could not find a road network position matching the position "
-                f"provided for station {id}"
+                f"provided for station {station_id}"
             )
             raise H3Error(msg)
 
         return Station(
-            id=id,
+            id=station_id,
             position=position,
             state=charger_states,
             energy_dispensed=energy_dispensed,
@@ -222,7 +222,7 @@ def from_row(
         elif station_id not in builder:
             # create this station
             return Station.build(
-                id=station_id,
+                station_id=station_id,
                 geoid=geoid,
                 road_network=road_network,
                 chargers=immutables.Map({charger_id: charger_count}),
diff --git a/nrel/hive/model/vehicle/mechatronics/bev.py b/nrel/hive/model/vehicle/mechatronics/bev.py
index d37b36b9..91f70b2c 100644
--- a/nrel/hive/model/vehicle/mechatronics/bev.py
+++ b/nrel/hive/model/vehicle/mechatronics/bev.py
@@ -151,8 +151,10 @@ def is_full(self, vehicle: Vehicle) -> bool:
         :param vehicle:
         :return:
         """
+        battery = vehicle.energy[EnergyType.ELECTRIC]
         full_kwh = self.battery_capacity_kwh - self.battery_full_threshold_kwh
-        return vehicle.energy[EnergyType.ELECTRIC] >= full_kwh
+        is_full = battery >= full_kwh
+        return is_full
 
     def consume_energy(self, vehicle: Vehicle, route: Route) -> Vehicle:
         """
diff --git a/nrel/hive/model/vehicle/mechatronics/powercurve/tabular_powercurve.py b/nrel/hive/model/vehicle/mechatronics/powercurve/tabular_powercurve.py
index aa67e7cc..6565a8bd 100644
--- a/nrel/hive/model/vehicle/mechatronics/powercurve/tabular_powercurve.py
+++ b/nrel/hive/model/vehicle/mechatronics/powercurve/tabular_powercurve.py
@@ -55,8 +55,14 @@ def __init__(
         self.step_size_seconds = data["step_size_seconds"]  # seconds
 
         if self.energy_type is None:
+            pt = data.get("power_type")
+            if pt is None:
+                pt_msg = "no power_type argument"
+            else:
+                pt_msg = f"invalid energy type '{data['power_type']}'"
             raise AttributeError(
-                f"TabularPowercurve initialized with invalid energy type {self.energy_type}"
+                f"TabularPowercurve configuration has {pt_msg}; "
+                f"should be one of {{electric, gasoline}} "
             )
 
         charging_model = sorted(data["power_curve"], key=lambda x: x["energy_kwh"])
diff --git a/nrel/hive/resources/mock_lobster.py b/nrel/hive/resources/mock_lobster.py
index 2738606a..00e65ac5 100644
--- a/nrel/hive/resources/mock_lobster.py
+++ b/nrel/hive/resources/mock_lobster.py
@@ -341,7 +341,7 @@ def mock_station_from_geoid(
         env = mock_env()
 
     return Station.build(
-        id=station_id,
+        station_id=station_id,
         geoid=geoid,
         road_network=road_network,
         chargers=chargers,