diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/CommConn.cpp b/automotive/vehicle/2.0/default/impl/vhal_v2_0/CommConn.cpp
index bf1de81..136b2e0 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/CommConn.cpp
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/CommConn.cpp
@@ -41,7 +41,7 @@
     }
 }
 
-void CommConn::sendMessage(emulator::EmulatorMessage const& msg) {
+void CommConn::sendMessage(vhal_proto::EmulatorMessage const& msg) {
     int numBytes = msg.ByteSize();
     std::vector<uint8_t> buffer(static_cast<size_t>(numBytes));
     if (!msg.SerializeToArray(buffer.data(), numBytes)) {
@@ -61,9 +61,9 @@
             break;
         }
 
-        emulator::EmulatorMessage rxMsg;
+        vhal_proto::EmulatorMessage rxMsg;
         if (rxMsg.ParseFromArray(buffer.data(), static_cast<int32_t>(buffer.size()))) {
-            emulator::EmulatorMessage respMsg;
+            vhal_proto::EmulatorMessage respMsg;
             mMessageProcessor->processMessage(rxMsg, respMsg);
 
             sendMessage(respMsg);
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/CommConn.h b/automotive/vehicle/2.0/default/impl/vhal_v2_0/CommConn.h
index 87b0dfc..6d36da4 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/CommConn.h
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/CommConn.h
@@ -44,8 +44,8 @@
      * Process a single message received over a CommConn. Populate the given respMsg with the reply
      * message we should send.
      */
-    virtual void processMessage(emulator::EmulatorMessage const& rxMsg,
-                                emulator::EmulatorMessage& respMsg) = 0;
+    virtual void processMessage(vhal_proto::EmulatorMessage const& rxMsg,
+                                vhal_proto::EmulatorMessage& respMsg) = 0;
 };
 
 /**
@@ -93,7 +93,7 @@
     /**
      * Serialized and send the given message to the other side.
      */
-    void sendMessage(emulator::EmulatorMessage const& msg);
+    void sendMessage(vhal_proto::EmulatorMessage const& msg);
 
    protected:
     std::unique_ptr<std::thread> mReadThread;
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/ProtoMessageConverter.cpp b/automotive/vehicle/2.0/default/impl/vhal_v2_0/ProtoMessageConverter.cpp
index db653be..77cb114 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/ProtoMessageConverter.cpp
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/ProtoMessageConverter.cpp
@@ -70,7 +70,7 @@
     CAST_COPY_PROTOBUF_VEC_TO_VHAL_TYPE(                                            \
             PROTO_VALUE, PROTO_VECNAME, VHAL_TYPE_VALUE, VHAL_TYPE_VECNAME, /*NO CAST*/)
 
-void toProto(emulator::VehiclePropConfig* protoCfg, const VehiclePropConfig& cfg) {
+void toProto(vhal_proto::VehiclePropConfig* protoCfg, const VehiclePropConfig& cfg) {
     protoCfg->set_prop(cfg.prop);
     protoCfg->set_access(toInt(cfg.access));
     protoCfg->set_change_mode(toInt(cfg.changeMode));
@@ -121,7 +121,7 @@
     protoCfg->set_max_sample_rate(cfg.maxSampleRate);
 }
 
-void fromProto(VehiclePropConfig* cfg, const emulator::VehiclePropConfig& protoCfg) {
+void fromProto(VehiclePropConfig* cfg, const vhal_proto::VehiclePropConfig& protoCfg) {
     CHECK_COPY_PROTOBUF_VAR_TO_VHAL_TYPE(protoCfg, prop, cfg, prop);
     CHECK_CAST_COPY_PROTOBUF_VAR_TO_VHAL_TYPE(protoCfg, access, cfg, access,
                                               static_cast<VehiclePropertyAccess>);
@@ -130,7 +130,7 @@
     COPY_PROTOBUF_VEC_TO_VHAL_TYPE(protoCfg, config_array, cfg, configArray);
     CHECK_COPY_PROTOBUF_VAR_TO_VHAL_TYPE(protoCfg, config_string, cfg, configString);
 
-    auto cast_to_acfg = [](const emulator::VehicleAreaConfig& protoAcfg) {
+    auto cast_to_acfg = [](const vhal_proto::VehicleAreaConfig& protoAcfg) {
         VehicleAreaConfig acfg;
         CHECK_COPY_PROTOBUF_VAR_TO_VHAL_TYPE(protoAcfg, area_id, &acfg, areaId);
         CHECK_COPY_PROTOBUF_VAR_TO_VHAL_TYPE(protoAcfg, min_int32_value, &acfg, minInt32Value);
@@ -148,11 +148,11 @@
     CHECK_COPY_PROTOBUF_VAR_TO_VHAL_TYPE(protoCfg, max_sample_rate, cfg, maxSampleRate);
 }
 
-void toProto(emulator::VehiclePropValue* protoVal, const VehiclePropValue& val) {
+void toProto(vhal_proto::VehiclePropValue* protoVal, const VehiclePropValue& val) {
     protoVal->set_prop(val.prop);
     protoVal->set_value_type(toInt(getPropType(val.prop)));
     protoVal->set_timestamp(val.timestamp);
-    protoVal->set_status((emulator::VehiclePropStatus)(val.status));
+    protoVal->set_status((vhal_proto::VehiclePropStatus)(val.status));
     protoVal->set_area_id(val.areaId);
 
     // Copy value data if it is set.
@@ -179,7 +179,7 @@
     }
 }
 
-void fromProto(VehiclePropValue* val, const emulator::VehiclePropValue& protoVal) {
+void fromProto(VehiclePropValue* val, const vhal_proto::VehiclePropValue& protoVal) {
     CHECK_COPY_PROTOBUF_VAR_TO_VHAL_TYPE(protoVal, prop, val, prop);
     CHECK_COPY_PROTOBUF_VAR_TO_VHAL_TYPE(protoVal, timestamp, val, timestamp);
     CHECK_CAST_COPY_PROTOBUF_VAR_TO_VHAL_TYPE(protoVal, status, val, status,
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/ProtoMessageConverter.h b/automotive/vehicle/2.0/default/impl/vhal_v2_0/ProtoMessageConverter.h
index 90e6540..01f3beb 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/ProtoMessageConverter.h
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/ProtoMessageConverter.h
@@ -33,15 +33,15 @@
 
 // VehiclePropConfig
 
-void toProto(emulator::VehiclePropConfig* protoCfg, const VehiclePropConfig& cfg);
+void toProto(vhal_proto::VehiclePropConfig* protoCfg, const VehiclePropConfig& cfg);
 
-void fromProto(VehiclePropConfig* cfg, const emulator::VehiclePropConfig& protoCfg);
+void fromProto(VehiclePropConfig* cfg, const vhal_proto::VehiclePropConfig& protoCfg);
 
 // VehiclePropValue
 
-void toProto(emulator::VehiclePropValue* protoVal, const VehiclePropValue& val);
+void toProto(vhal_proto::VehiclePropValue* protoVal, const VehiclePropValue& val);
 
-void fromProto(VehiclePropValue* val, const emulator::VehiclePropValue& protoVal);
+void fromProto(VehiclePropValue* val, const vhal_proto::VehiclePropValue& protoVal);
 
 }  // namespace proto_msg_converter
 
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/SocketComm.cpp b/automotive/vehicle/2.0/default/impl/vhal_v2_0/SocketComm.cpp
index 068333c..916c320 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/SocketComm.cpp
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/SocketComm.cpp
@@ -60,7 +60,7 @@
     }
 }
 
-void SocketComm::sendMessage(emulator::EmulatorMessage const& msg) {
+void SocketComm::sendMessage(vhal_proto::EmulatorMessage const& msg) {
     std::lock_guard<std::mutex> lock(mMutex);
     for (std::unique_ptr<SocketConn> const& conn : mOpenConnections) {
         conn->sendMessage(msg);
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/SocketComm.h b/automotive/vehicle/2.0/default/impl/vhal_v2_0/SocketComm.h
index 88b852b..52326b9 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/SocketComm.h
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/SocketComm.h
@@ -47,7 +47,7 @@
     /**
      * Serialized and send the given message to all connected clients.
      */
-    void sendMessage(emulator::EmulatorMessage const& msg);
+    void sendMessage(vhal_proto::EmulatorMessage const& msg);
 
    private:
     int mListenFd;
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/VehicleEmulator.cpp b/automotive/vehicle/2.0/default/impl/vhal_v2_0/VehicleEmulator.cpp
index 2a68900..263ca62 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/VehicleEmulator.cpp
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/VehicleEmulator.cpp
@@ -63,11 +63,11 @@
  * changed.
  */
 void VehicleEmulator::doSetValueFromClient(const VehiclePropValue& propValue) {
-    emulator::EmulatorMessage msg;
-    emulator::VehiclePropValue *val = msg.add_value();
+    vhal_proto::EmulatorMessage msg;
+    vhal_proto::VehiclePropValue* val = msg.add_value();
     populateProtoVehiclePropValue(val, &propValue);
-    msg.set_status(emulator::RESULT_OK);
-    msg.set_msg_type(emulator::SET_PROPERTY_ASYNC);
+    msg.set_status(vhal_proto::RESULT_OK);
+    msg.set_msg_type(vhal_proto::SET_PROPERTY_ASYNC);
 
     mSocketComm->sendMessage(msg);
     if (mPipeComm) {
@@ -78,17 +78,17 @@
 void VehicleEmulator::doGetConfig(VehicleEmulator::EmulatorMessage const& rxMsg,
                                   VehicleEmulator::EmulatorMessage& respMsg) {
     std::vector<VehiclePropConfig> configs = mHal->listProperties();
-    emulator::VehiclePropGet getProp = rxMsg.prop(0);
+    vhal_proto::VehiclePropGet getProp = rxMsg.prop(0);
 
-    respMsg.set_msg_type(emulator::GET_CONFIG_RESP);
-    respMsg.set_status(emulator::ERROR_INVALID_PROPERTY);
+    respMsg.set_msg_type(vhal_proto::GET_CONFIG_RESP);
+    respMsg.set_status(vhal_proto::ERROR_INVALID_PROPERTY);
 
     for (auto& config : configs) {
         // Find the config we are looking for
         if (config.prop == getProp.prop()) {
-            emulator::VehiclePropConfig* protoCfg = respMsg.add_config();
+            vhal_proto::VehiclePropConfig* protoCfg = respMsg.add_config();
             populateProtoVehicleConfig(protoCfg, config);
-            respMsg.set_status(emulator::RESULT_OK);
+            respMsg.set_status(vhal_proto::RESULT_OK);
             break;
         }
     }
@@ -98,11 +98,11 @@
                                      VehicleEmulator::EmulatorMessage& respMsg) {
     std::vector<VehiclePropConfig> configs = mHal->listProperties();
 
-    respMsg.set_msg_type(emulator::GET_CONFIG_ALL_RESP);
-    respMsg.set_status(emulator::RESULT_OK);
+    respMsg.set_msg_type(vhal_proto::GET_CONFIG_ALL_RESP);
+    respMsg.set_status(vhal_proto::RESULT_OK);
 
     for (auto& config : configs) {
-        emulator::VehiclePropConfig* protoCfg = respMsg.add_config();
+        vhal_proto::VehiclePropConfig* protoCfg = respMsg.add_config();
         populateProtoVehicleConfig(protoCfg, config);
     }
 }
@@ -110,11 +110,11 @@
 void VehicleEmulator::doGetProperty(VehicleEmulator::EmulatorMessage const& rxMsg,
                                     VehicleEmulator::EmulatorMessage& respMsg) {
     int32_t areaId = 0;
-    emulator::VehiclePropGet getProp = rxMsg.prop(0);
+    vhal_proto::VehiclePropGet getProp = rxMsg.prop(0);
     int32_t propId = getProp.prop();
-    emulator::Status status = emulator::ERROR_INVALID_PROPERTY;
+    vhal_proto::Status status = vhal_proto::ERROR_INVALID_PROPERTY;
 
-    respMsg.set_msg_type(emulator::GET_PROPERTY_RESP);
+    respMsg.set_msg_type(vhal_proto::GET_PROPERTY_RESP);
 
     if (getProp.has_area_id()) {
         areaId = getProp.area_id();
@@ -128,9 +128,9 @@
         StatusCode halStatus;
         auto val = mHal->get(request, &halStatus);
         if (val != nullptr) {
-            emulator::VehiclePropValue* protoVal = respMsg.add_value();
+            vhal_proto::VehiclePropValue* protoVal = respMsg.add_value();
             populateProtoVehiclePropValue(protoVal, val.get());
-            status = emulator::RESULT_OK;
+            status = vhal_proto::RESULT_OK;
         }
     }
 
@@ -139,12 +139,12 @@
 
 void VehicleEmulator::doGetPropertyAll(VehicleEmulator::EmulatorMessage const& /* rxMsg */,
                                        VehicleEmulator::EmulatorMessage& respMsg) {
-    respMsg.set_msg_type(emulator::GET_PROPERTY_ALL_RESP);
-    respMsg.set_status(emulator::RESULT_OK);
+    respMsg.set_msg_type(vhal_proto::GET_PROPERTY_ALL_RESP);
+    respMsg.set_status(vhal_proto::RESULT_OK);
 
     {
         for (const auto& prop : mHal->getAllProperties()) {
-            emulator::VehiclePropValue* protoVal = respMsg.add_value();
+            vhal_proto::VehiclePropValue* protoVal = respMsg.add_value();
             populateProtoVehiclePropValue(protoVal, &prop);
         }
     }
@@ -152,7 +152,7 @@
 
 void VehicleEmulator::doSetProperty(VehicleEmulator::EmulatorMessage const& rxMsg,
                                     VehicleEmulator::EmulatorMessage& respMsg) {
-    emulator::VehiclePropValue protoVal = rxMsg.value(0);
+    vhal_proto::VehiclePropValue protoVal = rxMsg.value(0);
     VehiclePropValue val = {
             .timestamp = elapsedRealtimeNano(),
             .areaId = protoVal.area_id(),
@@ -160,7 +160,7 @@
             .status = (VehiclePropertyStatus)protoVal.status(),
     };
 
-    respMsg.set_msg_type(emulator::SET_PROPERTY_RESP);
+    respMsg.set_msg_type(vhal_proto::SET_PROPERTY_RESP);
 
     // Copy value data if it is set.  This automatically handles complex data types if needed.
     if (protoVal.has_string_value()) {
@@ -188,40 +188,40 @@
     }
 
     bool halRes = mHal->setPropertyFromVehicle(val);
-    respMsg.set_status(halRes ? emulator::RESULT_OK : emulator::ERROR_INVALID_PROPERTY);
+    respMsg.set_status(halRes ? vhal_proto::RESULT_OK : vhal_proto::ERROR_INVALID_PROPERTY);
 }
 
-void VehicleEmulator::processMessage(emulator::EmulatorMessage const& rxMsg,
-                                     emulator::EmulatorMessage& respMsg) {
+void VehicleEmulator::processMessage(vhal_proto::EmulatorMessage const& rxMsg,
+                                     vhal_proto::EmulatorMessage& respMsg) {
     switch (rxMsg.msg_type()) {
-        case emulator::GET_CONFIG_CMD:
+        case vhal_proto::GET_CONFIG_CMD:
             doGetConfig(rxMsg, respMsg);
             break;
-        case emulator::GET_CONFIG_ALL_CMD:
+        case vhal_proto::GET_CONFIG_ALL_CMD:
             doGetConfigAll(rxMsg, respMsg);
             break;
-        case emulator::GET_PROPERTY_CMD:
+        case vhal_proto::GET_PROPERTY_CMD:
             doGetProperty(rxMsg, respMsg);
             break;
-        case emulator::GET_PROPERTY_ALL_CMD:
+        case vhal_proto::GET_PROPERTY_ALL_CMD:
             doGetPropertyAll(rxMsg, respMsg);
             break;
-        case emulator::SET_PROPERTY_CMD:
+        case vhal_proto::SET_PROPERTY_CMD:
             doSetProperty(rxMsg, respMsg);
             break;
         default:
             ALOGW("%s: Unknown message received, type = %d", __func__, rxMsg.msg_type());
-            respMsg.set_status(emulator::ERROR_UNIMPLEMENTED_CMD);
+            respMsg.set_status(vhal_proto::ERROR_UNIMPLEMENTED_CMD);
             break;
     }
 }
 
-void VehicleEmulator::populateProtoVehicleConfig(emulator::VehiclePropConfig* protoCfg,
+void VehicleEmulator::populateProtoVehicleConfig(vhal_proto::VehiclePropConfig* protoCfg,
                                                  const VehiclePropConfig& cfg) {
     return proto_msg_converter::toProto(protoCfg, cfg);
 }
 
-void VehicleEmulator::populateProtoVehiclePropValue(emulator::VehiclePropValue* protoVal,
+void VehicleEmulator::populateProtoVehiclePropValue(vhal_proto::VehiclePropValue* protoVal,
                                                     const VehiclePropValue* val) {
     return proto_msg_converter::toProto(protoVal, *val);
 }
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/VehicleEmulator.h b/automotive/vehicle/2.0/default/impl/vhal_v2_0/VehicleEmulator.h
index 58e387a..82947be 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/VehicleEmulator.h
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/VehicleEmulator.h
@@ -72,21 +72,21 @@
     virtual ~VehicleEmulator();
 
     void doSetValueFromClient(const VehiclePropValue& propValue);
-    void processMessage(emulator::EmulatorMessage const& rxMsg,
-                        emulator::EmulatorMessage& respMsg) override;
+    void processMessage(vhal_proto::EmulatorMessage const& rxMsg,
+                        vhal_proto::EmulatorMessage& respMsg) override;
 
    private:
     friend class ConnectionThread;
-    using EmulatorMessage = emulator::EmulatorMessage;
+    using EmulatorMessage = vhal_proto::EmulatorMessage;
 
     void doGetConfig(EmulatorMessage const& rxMsg, EmulatorMessage& respMsg);
     void doGetConfigAll(EmulatorMessage const& rxMsg, EmulatorMessage& respMsg);
     void doGetProperty(EmulatorMessage const& rxMsg, EmulatorMessage& respMsg);
     void doGetPropertyAll(EmulatorMessage const& rxMsg, EmulatorMessage& respMsg);
     void doSetProperty(EmulatorMessage const& rxMsg, EmulatorMessage& respMsg);
-    void populateProtoVehicleConfig(emulator::VehiclePropConfig* protoCfg,
+    void populateProtoVehicleConfig(vhal_proto::VehiclePropConfig* protoCfg,
                                     const VehiclePropConfig& cfg);
-    void populateProtoVehiclePropValue(emulator::VehiclePropValue* protoVal,
+    void populateProtoVehiclePropValue(vhal_proto::VehiclePropValue* protoVal,
                                        const VehiclePropValue* val);
 
 private:
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/proto/VehicleHalProto.proto b/automotive/vehicle/2.0/default/impl/vhal_v2_0/proto/VehicleHalProto.proto
index 04df5a8..4902a5d 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/proto/VehicleHalProto.proto
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/proto/VehicleHalProto.proto
@@ -16,7 +16,7 @@
 
 syntax = "proto2";
 
-package emulator;
+package vhal_proto;
 
 // CMD messages are from workstation --> VHAL
 // RESP messages are from VHAL --> workstation
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/proto/VehicleServer.proto b/automotive/vehicle/2.0/default/impl/vhal_v2_0/proto/VehicleServer.proto
index 7ce3c32..2cc6595 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/proto/VehicleServer.proto
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/proto/VehicleServer.proto
@@ -14,9 +14,9 @@
  * limitations under the License.
  */
 
-syntax = "proto2";
+syntax = "proto3";
 
-package emulator;
+package vhal_proto;
 
 import "google/protobuf/empty.proto";
 import "VehicleHalProto.proto";
@@ -32,7 +32,7 @@
 }
 
 message VehicleHalCallStatus {
-    required VehicleHalStatusCode status_code      = 1;
+    VehicleHalStatusCode status_code    = 1;
 }
 
 service VehicleServer {
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/tests/ProtoMessageConverter_test.cpp b/automotive/vehicle/2.0/default/impl/vhal_v2_0/tests/ProtoMessageConverter_test.cpp
index d16c7c4..3817e44 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/tests/ProtoMessageConverter_test.cpp
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/tests/ProtoMessageConverter_test.cpp
@@ -33,7 +33,7 @@
 namespace {
 
 void CheckPropConfigConversion(const VehiclePropConfig& config) {
-    emulator::VehiclePropConfig protoCfg;
+    vhal_proto::VehiclePropConfig protoCfg;
     VehiclePropConfig tmpConfig;
 
     toProto(&protoCfg, config);
@@ -76,7 +76,7 @@
 }
 
 void CheckPropValueConversion(const VehiclePropValue& val) {
-    emulator::VehiclePropValue protoVal;
+    vhal_proto::VehiclePropValue protoVal;
     VehiclePropValue tmpVal;
 
     toProto(&protoVal, val);