diff --git a/events/events.proto b/events/events.proto
index 4585780..05b8468 100644
--- a/events/events.proto
+++ b/events/events.proto
@@ -39,10 +39,11 @@ message ObjectsMessage {
     FrameRef frame_ref = 2;
 }
 
+// BoundingBox that contains an object
 message Object {
     TypeObject type = 1;
-    int32 lLeft = 2;
-    int32 up = 3;
+    int32 left = 2;
+    int32 top = 3;
     int32 right = 4;
     int32 bottom = 5;
     float confidence = 6;
diff --git a/go/events/events.pb.go b/go/events/events.pb.go
index 2179c36..7dbaabb 100644
--- a/go/events/events.pb.go
+++ b/go/events/events.pb.go
@@ -369,10 +369,11 @@ func (m *ObjectsMessage) GetFrameRef() *FrameRef {
 	return nil
 }
 
+// BoundingBox that contains an object
 type Object struct {
 	Type                 TypeObject `protobuf:"varint,1,opt,name=type,proto3,enum=robocar.events.TypeObject" json:"type,omitempty"`
-	LLeft                int32      `protobuf:"varint,2,opt,name=lLeft,proto3" json:"lLeft,omitempty"`
-	Up                   int32      `protobuf:"varint,3,opt,name=up,proto3" json:"up,omitempty"`
+	Left                 int32      `protobuf:"varint,2,opt,name=left,proto3" json:"left,omitempty"`
+	Top                  int32      `protobuf:"varint,3,opt,name=top,proto3" json:"top,omitempty"`
 	Right                int32      `protobuf:"varint,4,opt,name=right,proto3" json:"right,omitempty"`
 	Bottom               int32      `protobuf:"varint,5,opt,name=bottom,proto3" json:"bottom,omitempty"`
 	Confidence           float32    `protobuf:"fixed32,6,opt,name=confidence,proto3" json:"confidence,omitempty"`
@@ -413,16 +414,16 @@ func (m *Object) GetType() TypeObject {
 	return TypeObject_ANY
 }
 
-func (m *Object) GetLLeft() int32 {
+func (m *Object) GetLeft() int32 {
 	if m != nil {
-		return m.LLeft
+		return m.Left
 	}
 	return 0
 }
 
-func (m *Object) GetUp() int32 {
+func (m *Object) GetTop() int32 {
 	if m != nil {
-		return m.Up
+		return m.Top
 	}
 	return 0
 }
@@ -503,35 +504,35 @@ func init() {
 func init() { proto.RegisterFile("events/events.proto", fileDescriptor_8ec31f2d2a3db598) }
 
 var fileDescriptor_8ec31f2d2a3db598 = []byte{
-	// 473 bytes of a gzipped FileDescriptorProto
+	// 472 bytes of a gzipped FileDescriptorProto
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-	0x10, 0x8d, 0x64, 0x5b, 0x96, 0x26, 0xc1, 0x15, 0x9b, 0x12, 0xd4, 0x1c, 0x4a, 0xd0, 0xc9, 0x04,
+	0x10, 0x8d, 0x64, 0x4b, 0x96, 0xc6, 0xc1, 0x15, 0x9b, 0x12, 0xd4, 0x1c, 0x4a, 0xd0, 0xc9, 0x04,
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-	0xad, 0x9b, 0xe8, 0xd2, 0x5e, 0x7a, 0xf2, 0xbc, 0xe7, 0x79, 0x6f, 0xdf, 0xce, 0x8e, 0xe0, 0x14,
-	0x1f, 0xb1, 0x14, 0xf5, 0x95, 0xfe, 0x89, 0x2a, 0xce, 0x04, 0x23, 0x03, 0xce, 0x12, 0x96, 0xc6,
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-	0x31, 0x0c, 0xfe, 0x5f, 0x31, 0xa6, 0xe0, 0xdf, 0xf0, 0xe2, 0x11, 0x67, 0x2c, 0x3b, 0xc4, 0xf8,
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-	0x97, 0x99, 0x32, 0xdc, 0xc3, 0xe0, 0x36, 0xf9, 0x8e, 0xa9, 0xa8, 0x8d, 0xd7, 0x5b, 0xe8, 0x33,
-	0xcd, 0x04, 0xd6, 0x45, 0x67, 0x78, 0x3c, 0x3a, 0x6b, 0x1b, 0x69, 0x01, 0x35, 0x6d, 0xcf, 0x2f,
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-	0xad, 0x47, 0x35, 0x90, 0x7b, 0xf8, 0x50, 0xa9, 0x49, 0xf6, 0xa8, 0xfd, 0x50, 0xc9, 0x2e, 0x5e,
-	0xac, 0x37, 0x22, 0xe8, 0xea, 0x2e, 0x05, 0xc8, 0x19, 0x38, 0x09, 0x13, 0x82, 0xed, 0x82, 0x9e,
-	0xa2, 0x1b, 0xd4, 0x7a, 0x2e, 0xa7, 0xfd, 0x5c, 0xe1, 0x15, 0x9c, 0x2e, 0x7f, 0x14, 0x22, 0xdd,
-	0x50, 0x4c, 0x19, 0xcf, 0xcc, 0xb8, 0x02, 0xe8, 0x63, 0x19, 0x27, 0x5b, 0xd4, 0x1b, 0xee, 0x52,
-	0x03, 0x2f, 0xdf, 0x80, 0x77, 0x18, 0x39, 0x39, 0x86, 0xfe, 0x64, 0xfe, 0x65, 0x3c, 0x9d, 0xdc,
-	0xf8, 0x47, 0xc4, 0x85, 0xee, 0xdd, 0xf2, 0x13, 0xf5, 0x2d, 0xe2, 0x41, 0x6f, 0x31, 0x99, 0xde,
-	0xae, 0x7c, 0xfb, 0x72, 0x04, 0xf0, 0xe7, 0x9e, 0xa4, 0x0f, 0x9d, 0xf1, 0xfc, 0xab, 0x7f, 0x24,
-	0x8b, 0x8f, 0x63, 0xd9, 0xea, 0x42, 0xf7, 0xfa, 0x6e, 0xb6, 0xf0, 0x6d, 0x59, 0x2d, 0xa4, 0xa6,
-	0x73, 0xed, 0x7e, 0x73, 0xf4, 0x88, 0x12, 0x47, 0x7d, 0xba, 0xef, 0x7e, 0x07, 0x00, 0x00, 0xff,
-	0xff, 0x77, 0x9d, 0xdb, 0x75, 0xd1, 0x03, 0x00, 0x00,
+	0x8f, 0x91, 0xad, 0x62, 0x6b, 0xcd, 0x6a, 0x49, 0xf1, 0xbd, 0x3f, 0xa7, 0x3f, 0xb2, 0xec, 0xae,
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+	0xde, 0x37, 0x57, 0x8f, 0x28, 0x75, 0xd5, 0xa7, 0xfb, 0xee, 0x77, 0x00, 0x00, 0x00, 0xff, 0xff,
+	0xac, 0xa9, 0xc0, 0x00, 0xd1, 0x03, 0x00, 0x00,
 }
diff --git a/python/events/events_pb2.py b/python/events/events_pb2.py
index 5506638..14c9831 100644
--- a/python/events/events_pb2.py
+++ b/python/events/events_pb2.py
@@ -20,7 +20,7 @@ DESCRIPTOR = _descriptor.FileDescriptor(
   package='robocar.events',
   syntax='proto3',
   serialized_options=_b('Z\006events'),
-  serialized_pb=_b('\n\x13\x65vents/events.proto\x12\x0erobocar.events\"$\n\x08\x46rameRef\x12\x0c\n\x04name\x18\x01 \x01(\t\x12\n\n\x02id\x18\x02 \x01(\t\"C\n\x0c\x46rameMessage\x12$\n\x02id\x18\x01 \x01(\x0b\x32\x18.robocar.events.FrameRef\x12\r\n\x05\x66rame\x18\x02 \x01(\x0c\"d\n\x0fSteeringMessage\x12\x10\n\x08steering\x18\x01 \x01(\x02\x12\x12\n\nconfidence\x18\x02 \x01(\x02\x12+\n\tframe_ref\x18\x03 \x01(\x0b\x32\x18.robocar.events.FrameRef\"d\n\x0fThrottleMessage\x12\x10\n\x08throttle\x18\x01 \x01(\x02\x12\x12\n\nconfidence\x18\x02 \x01(\x02\x12+\n\tframe_ref\x18\x03 \x01(\x0b\x32\x18.robocar.events.FrameRef\"A\n\x10\x44riveModeMessage\x12-\n\ndrive_mode\x18\x01 \x01(\x0e\x32\x19.robocar.events.DriveMode\"f\n\x0eObjectsMessage\x12\'\n\x07objects\x18\x01 \x03(\x0b\x32\x16.robocar.events.Object\x12+\n\tframe_ref\x18\x02 \x01(\x0b\x32\x18.robocar.events.FrameRef\"\x80\x01\n\x06Object\x12(\n\x04type\x18\x01 \x01(\x0e\x32\x1a.robocar.events.TypeObject\x12\r\n\x05lLeft\x18\x02 \x01(\x05\x12\n\n\x02up\x18\x03 \x01(\x05\x12\r\n\x05right\x18\x04 \x01(\x05\x12\x0e\n\x06\x62ottom\x18\x05 \x01(\x05\x12\x12\n\nconfidence\x18\x06 \x01(\x02\"&\n\x13SwitchRecordMessage\x12\x0f\n\x07\x65nabled\x18\x01 \x01(\x08*-\n\tDriveMode\x12\x0b\n\x07INVALID\x10\x00\x12\x08\n\x04USER\x10\x01\x12\t\n\x05PILOT\x10\x02*2\n\nTypeObject\x12\x07\n\x03\x41NY\x10\x00\x12\x07\n\x03\x43\x41R\x10\x01\x12\x08\n\x04\x42UMP\x10\x02\x12\x08\n\x04PLOT\x10\x03\x42\x08Z\x06\x65ventsb\x06proto3')
+  serialized_pb=_b('\n\x13\x65vents/events.proto\x12\x0erobocar.events\"$\n\x08\x46rameRef\x12\x0c\n\x04name\x18\x01 \x01(\t\x12\n\n\x02id\x18\x02 \x01(\t\"C\n\x0c\x46rameMessage\x12$\n\x02id\x18\x01 \x01(\x0b\x32\x18.robocar.events.FrameRef\x12\r\n\x05\x66rame\x18\x02 \x01(\x0c\"d\n\x0fSteeringMessage\x12\x10\n\x08steering\x18\x01 \x01(\x02\x12\x12\n\nconfidence\x18\x02 \x01(\x02\x12+\n\tframe_ref\x18\x03 \x01(\x0b\x32\x18.robocar.events.FrameRef\"d\n\x0fThrottleMessage\x12\x10\n\x08throttle\x18\x01 \x01(\x02\x12\x12\n\nconfidence\x18\x02 \x01(\x02\x12+\n\tframe_ref\x18\x03 \x01(\x0b\x32\x18.robocar.events.FrameRef\"A\n\x10\x44riveModeMessage\x12-\n\ndrive_mode\x18\x01 \x01(\x0e\x32\x19.robocar.events.DriveMode\"f\n\x0eObjectsMessage\x12\'\n\x07objects\x18\x01 \x03(\x0b\x32\x16.robocar.events.Object\x12+\n\tframe_ref\x18\x02 \x01(\x0b\x32\x18.robocar.events.FrameRef\"\x80\x01\n\x06Object\x12(\n\x04type\x18\x01 \x01(\x0e\x32\x1a.robocar.events.TypeObject\x12\x0c\n\x04left\x18\x02 \x01(\x05\x12\x0b\n\x03top\x18\x03 \x01(\x05\x12\r\n\x05right\x18\x04 \x01(\x05\x12\x0e\n\x06\x62ottom\x18\x05 \x01(\x05\x12\x12\n\nconfidence\x18\x06 \x01(\x02\"&\n\x13SwitchRecordMessage\x12\x0f\n\x07\x65nabled\x18\x01 \x01(\x08*-\n\tDriveMode\x12\x0b\n\x07INVALID\x10\x00\x12\x08\n\x04USER\x10\x01\x12\t\n\x05PILOT\x10\x02*2\n\nTypeObject\x12\x07\n\x03\x41NY\x10\x00\x12\x07\n\x03\x43\x41R\x10\x01\x12\x08\n\x04\x42UMP\x10\x02\x12\x08\n\x04PLOT\x10\x03\x42\x08Z\x06\x65ventsb\x06proto3')
 )
 
 _DRIVEMODE = _descriptor.EnumDescriptor(
@@ -341,14 +341,14 @@ _OBJECT = _descriptor.Descriptor(
       is_extension=False, extension_scope=None,
       serialized_options=None, file=DESCRIPTOR),
     _descriptor.FieldDescriptor(
-      name='lLeft', full_name='robocar.events.Object.lLeft', index=1,
+      name='left', full_name='robocar.events.Object.left', index=1,
       number=2, type=5, cpp_type=1, label=1,
       has_default_value=False, default_value=0,
       message_type=None, enum_type=None, containing_type=None,
       is_extension=False, extension_scope=None,
       serialized_options=None, file=DESCRIPTOR),
     _descriptor.FieldDescriptor(
-      name='up', full_name='robocar.events.Object.up', index=2,
+      name='top', full_name='robocar.events.Object.top', index=2,
       number=3, type=5, cpp_type=1, label=1,
       has_default_value=False, default_value=0,
       message_type=None, enum_type=None, containing_type=None,