diff --git a/bngsdk.go b/bngsdk.go
index 2c6aed2..a174cbc 100644
--- a/bngsdk.go
+++ b/bngsdk.go
@@ -47,7 +47,7 @@ type BeamNGSDK struct {
 func NewBngSDK(opts Options) (*BeamNGSDK, error) {
 	sdk := BeamNGSDK{
 		Opts:   opts,
-		buffer: make([]byte, outgaugeSize),
+		buffer: make([]byte, OutgaugeSize),
 	}
 
 	var err error
@@ -184,6 +184,22 @@ func (sdk *BeamNGSDK) Update() (*Outgauge, error) {
 	return &sdk.data, sdk.parseData(sdk.buffer)
 }
 
+func (sdk *BeamNGSDK) GetTotalRead() int64 {
+	return sdk.reader.GetTotalRead()
+}
+
+func (sdk *BeamNGSDK) GetTotalWritten() int64 {
+	return sdk.writer.GetTotalWritten()
+}
+
 func (sdk *BeamNGSDK) parseData(buffer []byte) error {
 	return sdk.data.ParseData(buffer)
 }
+
+func (sdk *BeamNGSDK) GetSourceSize() int64 {
+	if sizer, ok := sdk.reader.(Sizer); ok {
+		return sizer.Size()
+	}
+
+	return 0
+}
diff --git a/outgauge.go b/outgauge.go
index 24c737a..ed7c476 100644
--- a/outgauge.go
+++ b/outgauge.go
@@ -7,7 +7,7 @@ import (
 )
 
 var (
-	outgaugeSize     = binary.Size(Outgauge{})
+	OutgaugeSize     = int64(binary.Size(Outgauge{}))
 	ErrNotEnoughData = errors.New("buffer len is too short for Outgauge unpacking")
 )
 
@@ -64,7 +64,7 @@ type Outgauge struct {
 }
 
 func (og *Outgauge) ParseData(buffer []byte) error {
-	if len(buffer) < outgaugeSize {
+	if int64(len(buffer)) < OutgaugeSize {
 		return ErrNotEnoughData
 	}
 
@@ -171,6 +171,11 @@ func (og *Outgauge) ABS() bool {
 	return og.ShowLights&DL_ABS != 0
 }
 
+// Spare reports whether spare was flipped
+func (og *Outgauge) Spare() bool {
+	return og.ShowLights&DL_SPARE != 0
+}
+
 // ShowLights - functions to check if a given dash light is on [END]
 
 // DashLights - functions to check if a given dash light is provided [START]
@@ -231,6 +236,11 @@ func (og *Outgauge) HasABSLight() bool {
 	return og.DashLights&DL_ABS != 0
 }
 
+// HasSpare reports whether spare was flipped
+func (og *Outgauge) HasSpare() bool {
+	return og.DashLights&DL_SPARE != 0
+}
+
 // DashLights - functions to check if a given dash light is provided [END]
 
 // Flags - functions to check if a given flag is ON [START]
diff --git a/reader.go b/reader.go
index 0cb7963..e519065 100644
--- a/reader.go
+++ b/reader.go
@@ -3,6 +3,7 @@ package bngsdk
 type BngImporter interface {
 	Reset() error
 	Next([]byte) (int, error)
+	GetTotalRead() int64
 	Close() error
 }
 
diff --git a/reader_binary.go b/reader_binary.go
index 7ff138e..e8a5b00 100644
--- a/reader_binary.go
+++ b/reader_binary.go
@@ -6,10 +6,15 @@ import (
 	"unsafe"
 )
 
+type Sizer interface {
+	Size() int64
+}
+
 type GobReader struct {
 	TotalRead int64
 	File      *os.File
 	Buf       []byte
+	size      int64
 }
 
 func NewOgBinReader(fp string) *GobReader {
@@ -18,10 +23,16 @@ func NewOgBinReader(fp string) *GobReader {
 		return nil
 	}
 
+	info, err := bin.Stat()
+	if err != nil {
+		return nil
+	}
+
 	return &GobReader{
 		TotalRead: 0,
 		File:      bin,
 		Buf:       make([]byte, unsafe.Sizeof(Outgauge{})),
+		size:      info.Size(),
 	}
 }
 
@@ -55,3 +66,11 @@ func (g *GobReader) Next(buffer []byte) (int, error) {
 
 	return nBytes, nil
 }
+
+func (g *GobReader) GetTotalRead() int64 {
+	return g.TotalRead
+}
+
+func (g *GobReader) Size() int64 {
+	return g.size
+}
diff --git a/reader_socket.go b/reader_socket.go
index 5b99bb0..f768712 100644
--- a/reader_socket.go
+++ b/reader_socket.go
@@ -41,9 +41,13 @@ func (ogr *OgUDPReader) Next(buffer []byte) (int, error) {
 	}
 
 	// Check if enough data was received to fill our struct
-	if nBytes != outgaugeSize {
+	if int64(nBytes) != OutgaugeSize {
 		return 0, ErrInvalidOutgaugeData
 	}
 
 	return nBytes, nil
 }
+
+func (ogr *OgUDPReader) GetTotalRead() int64 {
+	return ogr.udpConnection.GetTotalBytes()
+}
diff --git a/transport.go b/udp_transport.go
similarity index 89%
rename from transport.go
rename to udp_transport.go
index e3e9d1a..657d430 100644
--- a/transport.go
+++ b/udp_transport.go
@@ -32,6 +32,7 @@ type UDPTransport struct {
 	address    *net.UDPAddr
 	connection *net.UDPConn
 	dataChan   chan frame
+	totalBytes int64 // returns total bytes read in case of reader and written in case of writer
 }
 
 func NewUDPReader(ip string, port int) (*UDPTransport, error) {
@@ -110,7 +111,11 @@ func (ut *UDPTransport) udpSink() {
 }
 
 func (ut *UDPTransport) Write(data []byte) (int, error) {
-	return ut.connection.Write(data)
+	nBytes, err := ut.connection.Write(data)
+
+	ut.totalBytes += int64(nBytes)
+
+	return nBytes, err
 }
 
 func (ut *UDPTransport) Read(buffer []byte) (int, error) {
@@ -123,6 +128,8 @@ func (ut *UDPTransport) Read(buffer []byte) (int, error) {
 	nBytes := copy(buffer, latestFrame.Buf[:latestFrame.Len])
 	packetPool.Put(latestFrame.Buf)
 
+	ut.totalBytes += int64(nBytes)
+
 	return nBytes, nil
 }
 
@@ -133,3 +140,7 @@ func (ut *UDPTransport) Close() error {
 
 	return nil
 }
+
+func (ut *UDPTransport) GetTotalBytes() int64 {
+	return ut.totalBytes
+}
diff --git a/writer.go b/writer.go
index 5d7eaad..640e9a5 100644
--- a/writer.go
+++ b/writer.go
@@ -2,6 +2,7 @@ package bngsdk
 
 type BngExporter interface {
 	Write([]byte) (int, error)
+	GetTotalWritten() int64
 	Close() error
 }
 
diff --git a/writer_binary.go b/writer_binary.go
index 0bc16d9..d663a98 100644
--- a/writer_binary.go
+++ b/writer_binary.go
@@ -6,7 +6,8 @@ import (
 )
 
 type OgBinWriter struct {
-	file *os.File
+	file       *os.File
+	totalBytes int64
 }
 
 func NewOgBinWriter(path string) (*OgBinWriter, error) {
@@ -34,5 +35,12 @@ func (ogw *OgBinWriter) Write(data []byte) (int, error) {
 		return 0, err
 	}
 
-	return len(data), nil
+	nBytes := len(data)
+	ogw.totalBytes += int64(nBytes)
+
+	return nBytes, nil
+}
+
+func (ogw *OgBinWriter) GetTotalWritten() int64 {
+	return ogw.totalBytes
 }
diff --git a/writer_socket.go b/writer_socket.go
index 9b347c3..1280d4c 100644
--- a/writer_socket.go
+++ b/writer_socket.go
@@ -27,3 +27,7 @@ func (sw *SocketWriter) Write(data []byte) (int, error) {
 	// slog.Debug("Writing", "data", data)
 	return sw.udpConnection.Write(data)
 }
+
+func (sw *SocketWriter) GetTotalWritten() int64 {
+	return sw.udpConnection.totalBytes
+}