diff --git a/mosstool/trip/generator/_util/const.py b/mosstool/trip/generator/_util/const.py
index 400e37a..dbbca6c 100644
--- a/mosstool/trip/generator/_util/const.py
+++ b/mosstool/trip/generator/_util/const.py
@@ -6,6 +6,7 @@
 import pycityproto.city.map.v2.map_pb2 as mapv2
 import pycityproto.city.person.v2.person_pb2 as personv2
 import pycityproto.city.trip.v2.trip_pb2 as tripv2
+import numpy as np
 
 DIS_CAR = 1000
 DIS_BIKE = 500
@@ -23,7 +24,7 @@
     "HWHWH+": 1.43,
     "HSOSH": 0.00,
 }
-BUS_SUBWAY = tripv2.TRIP_MODE_BUS_WALK
+BUS_SUBWAY = tripv2.TRIP_MODE_BUS_SUBWAY_WALK
 BUS = tripv2.TRIP_MODE_BUS_WALK
 SUBWAY = tripv2.TRIP_MODE_SUBWAY_WALK
 CAR = tripv2.TRIP_MODE_DRIVE_ONLY
@@ -87,7 +88,11 @@
 GENDER_STATS = [1 / len(GENDERS) for _ in range(len(GENDERS))]
 AGES = [i for i in range(8, 75)]
 # probabilities
-AGE_STATS = [1 / len(AGES) for _ in range(len(AGES))]
+# mean_age: 40 
+# std_dev: 15
+_age_pdf = [np.exp(-((age - 40) ** 2) / (2 * 15 ** 2)) for age in AGES]
+# normalization
+AGE_STATS = [p / sum(_age_pdf) for p in _age_pdf]
 # work catg
 WORK_CATGS = {"business", "industrial", "administrative"}
 # education catg
diff --git a/mosstool/trip/route/preroute.py b/mosstool/trip/route/preroute.py
index 954e4a2..c89a060 100644
--- a/mosstool/trip/route/preroute.py
+++ b/mosstool/trip/route/preroute.py
@@ -12,7 +12,7 @@
 
 _TYPE_MAP = {
     TripMode.TRIP_MODE_DRIVE_ONLY: RouteType.ROUTE_TYPE_DRIVING,
-    TripMode.TRIP_MODE_TAXI: RouteType.ROUTE_TYPE_DRIVING,
+    TripMode.TRIP_MODE_TAXI: RouteType.ROUTE_TYPE_TAXI,
     TripMode.TRIP_MODE_BIKE_WALK: RouteType.ROUTE_TYPE_WALKING,
     TripMode.TRIP_MODE_BUS_WALK: RouteType.ROUTE_TYPE_BUS,
     TripMode.TRIP_MODE_SUBWAY_WALK: RouteType.ROUTE_TYPE_SUBWAY,
diff --git a/poetry.lock b/poetry.lock
index 5bfa494..94cf73e 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1,4 +1,4 @@
-# This file is automatically @generated by Poetry 1.8.2 and should not be changed by hand.
+# This file is automatically @generated by Poetry 1.8.4 and should not be changed by hand.
 
 [[package]]
 name = "affine"
@@ -2478,13 +2478,13 @@ tests = ["pytest"]
 
 [[package]]
 name = "pycityproto"
-version = "2.0.1"
+version = "2.0.7"
 description = "City Proto Generated Python SDK"
 optional = false
 python-versions = ">=3.8"
 files = [
-    {file = "pycityproto-2.0.1-py3-none-any.whl", hash = "sha256:2914ea651a645e588176d8e0176b463976b73b35c6dc34d3aff8f0cf76066435"},
-    {file = "pycityproto-2.0.1.tar.gz", hash = "sha256:d0237d28104c00e6bb9c964db3340b3b840d1f3bb34a3e93871494d61ece0acf"},
+    {file = "pycityproto-2.0.7-py3-none-any.whl", hash = "sha256:356532f68551c56d8d92cf05b63e043ca1116accef4a7c5da5787eb9b5656bc9"},
+    {file = "pycityproto-2.0.7.tar.gz", hash = "sha256:825a307686b6fda74f71ab562a7eb49930570bdc175904dc670152b450dcd032"},
 ]
 
 [package.dependencies]
@@ -3960,4 +3960,4 @@ type = ["pytest-mypy"]
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.9"
-content-hash = "e47d352ebfb8311de493b1fb5b28c72038d9a87b82f338090bc65e23f19f334e"
+content-hash = "78608b0deb2188f530509f130563a8a772e3717570cb4890fa663f8eb0ce76d8"
diff --git a/pyproject.toml b/pyproject.toml
index 11791dc..2aa25da 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "mosstool"
-version = "1.0.24"
+version = "1.0.25"
 description = "MObility Simulation System toolbox "
 authors = ["Jun Zhang <zhangjun990222@qq.com>","Junbo Yan <yanjb20thu@gmali.com>"]
 license = "MIT"
@@ -29,7 +29,7 @@ bs4 = "^0.0.2"
 matplotlib = "^3.8.3"
 generate-od = "^0.1"
 path4gmns = "^0.9.8"
-pycityproto = "^2.0.1"
+pycityproto = "^2.0.7"
 
 [tool.poetry.group.dev.dependencies]
 pytest = "^8.1.1"