diff --git a/integration/.gitignore b/integration/.gitignore
index f0e18f9d974..c3e9225fbd7 100644
--- a/integration/.gitignore
+++ b/integration/.gitignore
@@ -20,4 +20,4 @@ cmd/nodes2way-cli/nodes2way-cli
 cmd/trafficproxy-cli/*_flows.csv
 cmd/trafficproxy-cli/*_incidents.csv
 cmd/historicalspeed-timezone-builder/*mapping.csv
-cmd/osrm-traffic-updater/testdata/target.csv
\ No newline at end of file
+cmd/osrm-traffic-updater/testdata/target*.csv
diff --git a/integration/cmd/osrm-traffic-updater/osrm_traffic_updater.go b/integration/cmd/osrm-traffic-updater/osrm_traffic_updater.go
index c278a665d4c..c63486e5514 100644
--- a/integration/cmd/osrm-traffic-updater/osrm_traffic_updater.go
+++ b/integration/cmd/osrm-traffic-updater/osrm_traffic_updater.go
@@ -38,6 +38,8 @@ func main() {
 
 	isFlowDoneChan := make(chan bool, 1)
 	wayid2speed := make(map[int64]int)
+	segmentsOfWay := make(map[int64][]*trafficproxy.SegmentedFlow)
+
 	go func() {
 		trafficData, err := trafficproxyclient.GetFlowsIncidents(nil)
 		if err != nil {
@@ -45,8 +47,7 @@ func main() {
 			isFlowDoneChan <- false
 			return
 		}
-
-		trafficData2map(*trafficData, wayid2speed)
+		trafficData2map(*trafficData, wayid2speed, segmentsOfWay)
 		isFlowDoneChan <- true
 	}()
 
@@ -60,7 +61,7 @@ func main() {
 	if isFlowDone {
 		var ds dumperStatistic
 		ds.Init(TASKNUM)
-		dumpSpeedTable4Customize(wayid2speed, sources, flags.csvFile, &ds)
+		dumpSpeedTable4Customize(wayid2speed, segmentsOfWay, sources, flags.csvFile, &ds)
 		ds.Output()
 	}
 }
@@ -83,7 +84,7 @@ loop:
 	return isFlowDone
 }
 
-func trafficData2map(trafficData trafficproxy.TrafficResponse, m map[int64]int) {
+func trafficData2map(trafficData trafficproxy.TrafficResponse, m map[int64]int, s map[int64][]*trafficproxy.SegmentedFlow) {
 	startTime := time.Now()
 	defer func() {
 		log.Printf("Processing time for building traffic map takes %f seconds\n", time.Now().Sub(startTime).Seconds())
@@ -102,6 +103,7 @@ func trafficData2map(trafficData trafficproxy.TrafficResponse, m map[int64]int)
 
 		wayid := flow.Flow.WayID
 		m[wayid] = int(flow.Flow.Speed)
+		s[wayid] = flow.Flow.SegmentedFlow
 
 		if wayid > 0 {
 			fwdCnt++
diff --git a/integration/cmd/osrm-traffic-updater/speed_table_dumper.go b/integration/cmd/osrm-traffic-updater/speed_table_dumper.go
index 8145fc1c57d..6a1be2ed693 100644
--- a/integration/cmd/osrm-traffic-updater/speed_table_dumper.go
+++ b/integration/cmd/osrm-traffic-updater/speed_table_dumper.go
@@ -4,17 +4,20 @@ import (
 	"bufio"
 	"fmt"
 	"log"
+	"math"
 	"os"
 	"strconv"
 	"strings"
 	"sync"
 	"time"
+
+	"github.com/Telenav/osrm-backend/integration/traffic/livetraffic/trafficproxy"
 )
 
 var tasksWg sync.WaitGroup
 var dumpFinishedWg sync.WaitGroup
 
-func dumpSpeedTable4Customize(wayid2speed map[int64]int, sources [TASKNUM]chan string,
+func dumpSpeedTable4Customize(wayid2speed map[int64]int, segmentsOfWay map[int64][]*trafficproxy.SegmentedFlow, sources [TASKNUM]chan string,
 	outputPath string, ds *dumperStatistic) {
 	startTime := time.Now()
 
@@ -23,7 +26,7 @@ func dumpSpeedTable4Customize(wayid2speed map[int64]int, sources [TASKNUM]chan s
 	}
 
 	sink := make(chan string)
-	startTasks(wayid2speed, sources, sink, ds)
+	startTasks(wayid2speed, segmentsOfWay, sources, sink, ds)
 	startDump(outputPath, sink)
 	wait4AllTasksFinished(sink, ds)
 
@@ -31,11 +34,11 @@ func dumpSpeedTable4Customize(wayid2speed map[int64]int, sources [TASKNUM]chan s
 	fmt.Printf("Processing time for dumpSpeedTable4Customize takes %f seconds\n", endTime.Sub(startTime).Seconds())
 }
 
-func startTasks(wayid2speed map[int64]int, sources [TASKNUM]chan string,
+func startTasks(wayid2speed map[int64]int, segmentsOfWay map[int64][]*trafficproxy.SegmentedFlow, sources [TASKNUM]chan string,
 	sink chan<- string, ds *dumperStatistic) {
 	tasksWg.Add(TASKNUM)
 	for i := 0; i < TASKNUM; i++ {
-		go task(wayid2speed, sources[i], sink, ds)
+		go task(wayid2speed, segmentsOfWay, sources[i], sink, ds)
 	}
 }
 
@@ -51,13 +54,15 @@ func wait4AllTasksFinished(sink chan string, ds *dumperStatistic) {
 	dumpFinishedWg.Wait()
 }
 
-func task(wayid2speed map[int64]int, source <-chan string, sink chan<- string, ds *dumperStatistic) {
+func task(wayid2speed map[int64]int, segmentsOfWay map[int64][]*trafficproxy.SegmentedFlow, source <-chan string, sink chan<- string, ds *dumperStatistic) {
 	var wayCnt, nodeCnt, fwdRecordCnt, bwdRecordCnt, wayMatched, nodeMatched, fwdTrafficMatched, bwdTrafficMatched uint64
 	var err error
 	for str := range source {
 		elements := strings.Split(str, ",")
 		wayCnt += 1
-		nodeCnt += (uint64)(len(elements) - 1)
+		nodesInWayCnt := (uint64)(len(elements) - 1)
+		nodeCnt += nodesInWayCnt
+
 		if len(elements) < 3 {
 			continue
 		}
@@ -71,6 +76,20 @@ func task(wayid2speed map[int64]int, source <-chan string, sink chan<- string, d
 		speedFwd, okFwd := wayid2speed[(int64)(wayid)]
 		speedBwd, okBwd := wayid2speed[(int64)(-wayid)]
 
+		speedsFwd := make([]int, nodesInWayCnt)
+		speedsBwd := make([]int, nodesInWayCnt)
+
+		for i := range elements[1:] {
+			speedsFwd[i] = speedFwd
+			speedsBwd[i] = speedBwd
+		}
+
+		segmentsFwd := segmentsOfWay[(int64)(wayid)]
+		segmentsBwd := segmentsOfWay[(int64)(-wayid)]
+
+		getSpeedOfSegments(segmentsFwd, speedsFwd, nodesInWayCnt)
+		getSpeedOfSegments(segmentsBwd, speedsBwd, nodesInWayCnt)
+
 		if okFwd || okBwd {
 			var nodes []string = elements[1:]
 			wayMatched += 1
@@ -94,11 +113,11 @@ func task(wayid2speed map[int64]int, source <-chan string, sink chan<- string, d
 				}
 				if okFwd {
 					fwdRecordCnt += 1
-					sink <- generateSingleRecord(n1, n2, speedFwd, true)
+					sink <- generateSingleRecord(n1, n2, speedsFwd[i], true)
 				}
 				if okBwd {
 					bwdRecordCnt += 1
-					sink <- generateSingleRecord(n1, n2, speedBwd, false)
+					sink <- generateSingleRecord(n1, n2, speedsBwd[i], false)
 				}
 
 			}
@@ -109,6 +128,17 @@ func task(wayid2speed map[int64]int, source <-chan string, sink chan<- string, d
 	tasksWg.Done()
 }
 
+func getSpeedOfSegments(segments []*trafficproxy.SegmentedFlow, speeds []int, nodesCnt uint64) {
+	for _, segment := range segments {
+		indexOfBegin := int(math.Floor(float64(nodesCnt) * float64(segment.Begin) / 100))
+		indexOfEnd := int(math.Floor(float64(nodesCnt) * float64(segment.End) / 100))
+
+		for i := indexOfBegin; i < indexOfEnd; i++ {
+			speeds[i] = int(segment.Speed)
+		}
+	}
+}
+
 // format
 // if dir = true, means traffic for forward, generate: from, to, speed
 // if dir = false, means this speed is for backward flow, generate: to, from, speed
diff --git a/integration/cmd/osrm-traffic-updater/speed_table_dumper_test.go b/integration/cmd/osrm-traffic-updater/speed_table_dumper_test.go
index 27094f9b1cf..6b344ea787d 100644
--- a/integration/cmd/osrm-traffic-updater/speed_table_dumper_test.go
+++ b/integration/cmd/osrm-traffic-updater/speed_table_dumper_test.go
@@ -11,6 +11,8 @@ import (
 	"strconv"
 	"strings"
 	"testing"
+
+	"github.com/Telenav/osrm-backend/integration/traffic/livetraffic/trafficproxy"
 )
 
 func TestSpeedTableDumper1(t *testing.T) {
@@ -23,16 +25,41 @@ func TestSpeedTableDumper1(t *testing.T) {
 
 	// construct mock traffic
 	wayid2speed := make(map[int64]int)
+	segmentsOfWay := make(map[int64][]*trafficproxy.SegmentedFlow)
 	loadMockTrafficFlow2Map(wayid2speed)
 
 	var ds dumperStatistic
 	ds.Init(TASKNUM)
-	dumpSpeedTable4Customize(wayid2speed, sources, "./testdata/target.csv", &ds)
+	dumpSpeedTable4Customize(wayid2speed, segmentsOfWay, sources, "./testdata/target.csv", &ds)
 
 	compareFileContentUnstable("./testdata/target.csv", "./testdata/expect.csv", t)
 	validateStatistic(&ds, t)
 }
 
+func TestSpeedTableDumper2(t *testing.T) {
+	// load result into sources
+	var sources [TASKNUM]chan string
+	for i := range sources {
+		sources[i] = make(chan string, 10000)
+	}
+	go loadWay2NodeidsTable("./testdata/id-mapping-segment.csv.snappy", sources)
+
+	// construct mock traffic
+	wayid2speed := make(map[int64]int)
+	wayid2speed[733690162] = 60
+	wayid2speed[-733689924] = 60
+
+	segmentsOfWay := make(map[int64][]*trafficproxy.SegmentedFlow)
+	loadMockTrafficFlowSegment2Map(segmentsOfWay)
+
+	var ds dumperStatistic
+	ds.Init(TASKNUM)
+	dumpSpeedTable4Customize(wayid2speed, segmentsOfWay, sources, "./testdata/target-segment.csv", &ds)
+
+	compareFileContentUnstable("./testdata/target-segment.csv", "./testdata/expect-segment.csv", t)
+	// validateStatistic(&ds, t)
+}
+
 func TestGenerateSingleRecord1(t *testing.T) {
 	str := generateSingleRecord(12345, 54321, 33, true)
 	if strings.Compare(str, "12345,54321,33\n") != 0 {
@@ -62,6 +89,11 @@ func loadMockTrafficFlow2Map(wayid2speed map[int64]int) {
 	wayid2speed[-24418344] = 59
 }
 
+func loadMockTrafficFlowSegment2Map(segmentsOfWay map[int64][]*trafficproxy.SegmentedFlow) {
+	segmentsOfWay[733690162] = []*trafficproxy.SegmentedFlow{{Speed: 25, Begin: 25, End: 75}}
+	segmentsOfWay[-733689924] = []*trafficproxy.SegmentedFlow{{Speed: 25, Begin: 10, End: 50}}
+}
+
 type tNodePair struct {
 	f, t uint64
 }
diff --git a/integration/cmd/osrm-traffic-updater/testdata/expect-segment.csv b/integration/cmd/osrm-traffic-updater/testdata/expect-segment.csv
new file mode 100755
index 00000000000..ee8143a76da
--- /dev/null
+++ b/integration/cmd/osrm-traffic-updater/testdata/expect-segment.csv
@@ -0,0 +1,11 @@
+1253042677,6871726226,25
+6871775001,1253042677,25
+6871775003,6871775001,60
+6871726248,6871775003,60
+6871726238,6871744979,60
+6871744979,6871744978,60
+6871744978,6871744977,25
+6871744977,6871744976,25
+6871744976,6871744975,25
+6871744975,6871744974,25
+6871744974,6871744973,60
diff --git a/integration/cmd/osrm-traffic-updater/testdata/id-mapping-segment.csv b/integration/cmd/osrm-traffic-updater/testdata/id-mapping-segment.csv
new file mode 100755
index 00000000000..c0036c7e83b
--- /dev/null
+++ b/integration/cmd/osrm-traffic-updater/testdata/id-mapping-segment.csv
@@ -0,0 +1,2 @@
+733690162,6871726238,6871744979,6871744978,6871744977,6871744976,6871744975,6871744974,6871744973
+733689924,6871726226,1253042677,6871775001,6871775003,6871726248
diff --git a/integration/cmd/osrm-traffic-updater/testdata/id-mapping-segment.csv.snappy b/integration/cmd/osrm-traffic-updater/testdata/id-mapping-segment.csv.snappy
new file mode 100755
index 00000000000..f7a549ab7d6
Binary files /dev/null and b/integration/cmd/osrm-traffic-updater/testdata/id-mapping-segment.csv.snappy differ
diff --git a/integration/traffic/livetraffic/trafficproxy/csv_string_test.go b/integration/traffic/livetraffic/trafficproxy/csv_string_test.go
index 4a4f74d4cfa..83fd7d0429d 100644
--- a/integration/traffic/livetraffic/trafficproxy/csv_string_test.go
+++ b/integration/traffic/livetraffic/trafficproxy/csv_string_test.go
@@ -10,14 +10,14 @@ func TestFlowCSVString(t *testing.T) {
 		humanFriendlyCSVString string
 	}{
 		{
-			Flow{WayID: 829733412, Speed: 20.280001, TrafficLevel: TrafficLevel_FREE_FLOW, Timestamp: 1579419488000},
-			"829733412,20.280001,7,1579419488000",
-			"829733412,20.280001,FREE_FLOW,1579419488000",
+			Flow{WayID: 829733412, Speed: 20.280001, TrafficLevel: TrafficLevel_FREE_FLOW, Timestamp: 1579419488000, SegmentedFlow: []*SegmentedFlow{{Speed: 25, Begin: 25, End: 75}}},
+			"829733412,20.280001,7,1579419488000,[speed:25 begin:25 end:75 ]",
+			"829733412,20.280001,FREE_FLOW,1579419488000,[speed:25 begin:25 end:75 ]",
 		},
 		{
-			Flow{WayID: -129639168, Speed: 31.389999, TrafficLevel: TrafficLevel_FREE_FLOW, Timestamp: 1579419488000},
-			"-129639168,31.389999,7,1579419488000",
-			"-129639168,31.389999,FREE_FLOW,1579419488000",
+			Flow{WayID: -129639168, Speed: 31.389999, TrafficLevel: TrafficLevel_FREE_FLOW, Timestamp: 1579419488000, SegmentedFlow: []*SegmentedFlow{}},
+			"-129639168,31.389999,7,1579419488000,[]",
+			"-129639168,31.389999,FREE_FLOW,1579419488000,[]",
 		},
 	}
 
diff --git a/integration/traffic/livetraffic/trafficproxy/flow_extension.go b/integration/traffic/livetraffic/trafficproxy/flow_extension.go
index 16715bb7a7c..5bb52c95546 100644
--- a/integration/traffic/livetraffic/trafficproxy/flow_extension.go
+++ b/integration/traffic/livetraffic/trafficproxy/flow_extension.go
@@ -12,11 +12,11 @@ func (f *Flow) IsBlocking() bool {
 // CSVString represents Flow as defined CSV format.
 // I.e. 'wayID,Speed,TrafficLevel,Timestamp'
 func (f *Flow) CSVString() string {
-	return fmt.Sprintf("%d,%f,%d,%d", f.WayID, f.Speed, f.TrafficLevel, f.Timestamp)
+	return fmt.Sprintf("%d,%f,%d,%d,%v", f.WayID, f.Speed, f.TrafficLevel, f.Timestamp, f.SegmentedFlow)
 }
 
 // HumanFriendlyCSVString represents Flow as defined CSV format, but prefer human friendly string instead of integer.
 // I.e. 'wayID,Speed,TrafficLevel,Timestamp'
 func (f *Flow) HumanFriendlyCSVString() string {
-	return fmt.Sprintf("%d,%f,%s,%d", f.WayID, f.Speed, f.TrafficLevel, f.Timestamp)
+	return fmt.Sprintf("%d,%f,%s,%d,%v", f.WayID, f.Speed, f.TrafficLevel, f.Timestamp, f.SegmentedFlow)
 }
diff --git a/integration/traffic/livetraffic/trafficproxy/trafficproxy.pb.go b/integration/traffic/livetraffic/trafficproxy/trafficproxy.pb.go
index 13f01dadced..a21bf55c279 100644
--- a/integration/traffic/livetraffic/trafficproxy/trafficproxy.pb.go
+++ b/integration/traffic/livetraffic/trafficproxy/trafficproxy.pb.go
@@ -651,21 +651,85 @@ func (m *FlowResponse) GetTrasctionID() string {
 	return ""
 }
 
-type Flow struct {
-	WayID                int64        `protobuf:"zigzag64,1,opt,name=wayID,proto3" json:"wayID,omitempty"`
-	Speed                float32      `protobuf:"fixed32,2,opt,name=speed,proto3" json:"speed,omitempty"`
-	TrafficLevel         TrafficLevel `protobuf:"varint,3,opt,name=trafficLevel,proto3,enum=trafficproxy.TrafficLevel" json:"trafficLevel,omitempty"`
-	Timestamp            int64        `protobuf:"varint,4,opt,name=timestamp,proto3" json:"timestamp,omitempty"`
+type SegmentedFlow struct {
+	Speed                float32      `protobuf:"fixed32,1,opt,name=speed,proto3" json:"speed,omitempty"`
+	TrafficLevel         TrafficLevel `protobuf:"varint,2,opt,name=trafficLevel,proto3,enum=trafficproxy.TrafficLevel" json:"trafficLevel,omitempty"`
+	Begin                int32        `protobuf:"varint,3,opt,name=begin,proto3" json:"begin,omitempty"`
+	End                  int32        `protobuf:"varint,4,opt,name=end,proto3" json:"end,omitempty"`
 	XXX_NoUnkeyedLiteral struct{}     `json:"-"`
 	XXX_unrecognized     []byte       `json:"-"`
 	XXX_sizecache        int32        `json:"-"`
 }
 
+func (m *SegmentedFlow) Reset()         { *m = SegmentedFlow{} }
+func (m *SegmentedFlow) String() string { return proto.CompactTextString(m) }
+func (*SegmentedFlow) ProtoMessage()    {}
+func (*SegmentedFlow) Descriptor() ([]byte, []int) {
+	return fileDescriptor_9c857d02e32d0eb6, []int{7}
+}
+
+func (m *SegmentedFlow) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_SegmentedFlow.Unmarshal(m, b)
+}
+func (m *SegmentedFlow) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_SegmentedFlow.Marshal(b, m, deterministic)
+}
+func (m *SegmentedFlow) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_SegmentedFlow.Merge(m, src)
+}
+func (m *SegmentedFlow) XXX_Size() int {
+	return xxx_messageInfo_SegmentedFlow.Size(m)
+}
+func (m *SegmentedFlow) XXX_DiscardUnknown() {
+	xxx_messageInfo_SegmentedFlow.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_SegmentedFlow proto.InternalMessageInfo
+
+func (m *SegmentedFlow) GetSpeed() float32 {
+	if m != nil {
+		return m.Speed
+	}
+	return 0
+}
+
+func (m *SegmentedFlow) GetTrafficLevel() TrafficLevel {
+	if m != nil {
+		return m.TrafficLevel
+	}
+	return TrafficLevel_NO_LEVELS
+}
+
+func (m *SegmentedFlow) GetBegin() int32 {
+	if m != nil {
+		return m.Begin
+	}
+	return 0
+}
+
+func (m *SegmentedFlow) GetEnd() int32 {
+	if m != nil {
+		return m.End
+	}
+	return 0
+}
+
+type Flow struct {
+	WayID                int64            `protobuf:"zigzag64,1,opt,name=wayID,proto3" json:"wayID,omitempty"`
+	Speed                float32          `protobuf:"fixed32,2,opt,name=speed,proto3" json:"speed,omitempty"`
+	TrafficLevel         TrafficLevel     `protobuf:"varint,3,opt,name=trafficLevel,proto3,enum=trafficproxy.TrafficLevel" json:"trafficLevel,omitempty"`
+	Timestamp            int64            `protobuf:"varint,4,opt,name=timestamp,proto3" json:"timestamp,omitempty"`
+	SegmentedFlow        []*SegmentedFlow `protobuf:"bytes,5,rep,name=segmentedFlow,proto3" json:"segmentedFlow,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}         `json:"-"`
+	XXX_unrecognized     []byte           `json:"-"`
+	XXX_sizecache        int32            `json:"-"`
+}
+
 func (m *Flow) Reset()         { *m = Flow{} }
 func (m *Flow) String() string { return proto.CompactTextString(m) }
 func (*Flow) ProtoMessage()    {}
 func (*Flow) Descriptor() ([]byte, []int) {
-	return fileDescriptor_9c857d02e32d0eb6, []int{7}
+	return fileDescriptor_9c857d02e32d0eb6, []int{8}
 }
 
 func (m *Flow) XXX_Unmarshal(b []byte) error {
@@ -714,6 +778,13 @@ func (m *Flow) GetTimestamp() int64 {
 	return 0
 }
 
+func (m *Flow) GetSegmentedFlow() []*SegmentedFlow {
+	if m != nil {
+		return m.SegmentedFlow
+	}
+	return nil
+}
+
 type IncidentResponse struct {
 	Incident             *Incident `protobuf:"bytes,1,opt,name=incident,proto3" json:"incident,omitempty"`
 	Action               Action    `protobuf:"varint,2,opt,name=action,proto3,enum=trafficproxy.Action" json:"action,omitempty"`
@@ -727,7 +798,7 @@ func (m *IncidentResponse) Reset()         { *m = IncidentResponse{} }
 func (m *IncidentResponse) String() string { return proto.CompactTextString(m) }
 func (*IncidentResponse) ProtoMessage()    {}
 func (*IncidentResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_9c857d02e32d0eb6, []int{8}
+	return fileDescriptor_9c857d02e32d0eb6, []int{9}
 }
 
 func (m *IncidentResponse) XXX_Unmarshal(b []byte) error {
@@ -792,7 +863,7 @@ func (m *Incident) Reset()         { *m = Incident{} }
 func (m *Incident) String() string { return proto.CompactTextString(m) }
 func (*Incident) ProtoMessage()    {}
 func (*Incident) Descriptor() ([]byte, []int) {
-	return fileDescriptor_9c857d02e32d0eb6, []int{9}
+	return fileDescriptor_9c857d02e32d0eb6, []int{10}
 }
 
 func (m *Incident) XXX_Unmarshal(b []byte) error {
@@ -916,7 +987,7 @@ func (m *Location) Reset()         { *m = Location{} }
 func (m *Location) String() string { return proto.CompactTextString(m) }
 func (*Location) ProtoMessage()    {}
 func (*Location) Descriptor() ([]byte, []int) {
-	return fileDescriptor_9c857d02e32d0eb6, []int{10}
+	return fileDescriptor_9c857d02e32d0eb6, []int{11}
 }
 
 func (m *Location) XXX_Unmarshal(b []byte) error {
@@ -965,6 +1036,7 @@ func init() {
 	proto.RegisterType((*TrafficResponse)(nil), "trafficproxy.TrafficResponse")
 	proto.RegisterType((*TrafficSource)(nil), "trafficproxy.TrafficSource")
 	proto.RegisterType((*FlowResponse)(nil), "trafficproxy.FlowResponse")
+	proto.RegisterType((*SegmentedFlow)(nil), "trafficproxy.SegmentedFlow")
 	proto.RegisterType((*Flow)(nil), "trafficproxy.Flow")
 	proto.RegisterType((*IncidentResponse)(nil), "trafficproxy.IncidentResponse")
 	proto.RegisterType((*Incident)(nil), "trafficproxy.Incident")
@@ -974,81 +1046,85 @@ func init() {
 func init() { proto.RegisterFile("trafficproxy.proto", fileDescriptor_9c857d02e32d0eb6) }
 
 var fileDescriptor_9c857d02e32d0eb6 = []byte{
-	// 1169 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xac, 0x56, 0xdd, 0x8e, 0xdb, 0x44,
-	0x1b, 0x8e, 0x37, 0xff, 0x6f, 0x7e, 0x76, 0x76, 0xbe, 0xfd, 0xaa, 0xb0, 0x2c, 0x25, 0x8a, 0x44,
-	0x15, 0x45, 0xd5, 0x0a, 0x05, 0x0e, 0x90, 0x90, 0x10, 0x8e, 0x3d, 0x6d, 0xdc, 0xba, 0x76, 0x3a,
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+	0xbb, 0x0b, 0x00, 0x00,
 }
 
 // Reference imports to suppress errors if they are not otherwise used.
diff --git a/integration/trafficproxy.proto b/integration/trafficproxy.proto
index 8f5cefa6311..19087b9fca1 100644
--- a/integration/trafficproxy.proto
+++ b/integration/trafficproxy.proto
@@ -62,11 +62,19 @@ message FlowResponse {
   string trasctionID = 3; // unique ID for tracking the Flow from provider to end user
 }
 
+message SegmentedFlow {
+  float speed = 1;  // unit: meter per second. always >= 0
+  TrafficLevel trafficLevel = 2;  // `trafficLevel==CLOSED` means blocking Flow
+  int32 begin = 3;  // begin offset percentage, range [0,100)
+  int32 end = 4;    // end offset percentage, range (0, 100], end > begin
+}
+
 message Flow {
   sint64 wayID = 1; // positive means forward, negative means backward
   float speed = 2;  // unit: meter per second. always >= 0
   TrafficLevel trafficLevel = 3;  // `trafficLevel==CLOSED` means blocking Flow
   int64 timestamp = 4; // received timestamp from provider, number of milliseconds since the Epoch
+  repeated SegmentedFlow segmentedFlow = 5; // optional segmented flow, leave empty if no partial flow on the way. 
 }
 
 enum TrafficLevel {
@@ -132,4 +140,4 @@ enum IncidentSeverity {
 message Location {
   double lat = 1;
   double lon = 2;
-}
\ No newline at end of file
+}