diff --git a/homeassistant/components/nextbus/const.py b/homeassistant/components/nextbus/const.py
new file mode 100644
index 00000000000..9d9d0a5262f
--- /dev/null
+++ b/homeassistant/components/nextbus/const.py
@@ -0,0 +1,6 @@
+"""NextBus Constants."""
+DOMAIN = "nextbus"
+
+CONF_AGENCY = "agency"
+CONF_ROUTE = "route"
+CONF_STOP = "stop"
diff --git a/homeassistant/components/nextbus/sensor.py b/homeassistant/components/nextbus/sensor.py
index 4f24a7aa7f3..02f5d8695ca 100644
--- a/homeassistant/components/nextbus/sensor.py
+++ b/homeassistant/components/nextbus/sensor.py
@@ -19,14 +19,11 @@ from homeassistant.helpers.entity_platform import AddEntitiesCallback
 from homeassistant.helpers.typing import ConfigType, DiscoveryInfoType
 from homeassistant.util.dt import utc_from_timestamp
 
+from .const import CONF_AGENCY, CONF_ROUTE, CONF_STOP
+from .util import listify, maybe_first
+
 _LOGGER = logging.getLogger(__name__)
 
-DOMAIN = "nextbus"
-
-CONF_AGENCY = "agency"
-CONF_ROUTE = "route"
-CONF_STOP = "stop"
-
 PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend(
     {
         vol.Required(CONF_AGENCY): cv.string,
@@ -37,29 +34,6 @@ PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend(
 )
 
 
-def listify(maybe_list):
-    """Return list version of whatever value is passed in.
-
-    This is used to provide a consistent way of interacting with the JSON
-    results from the API. There are several attributes that will either missing
-    if there are no values, a single dictionary if there is only one value, and
-    a list if there are multiple.
-    """
-    if maybe_list is None:
-        return []
-    if isinstance(maybe_list, list):
-        return maybe_list
-    return [maybe_list]
-
-
-def maybe_first(maybe_list):
-    """Return the first item out of a list or returns back the input."""
-    if isinstance(maybe_list, list) and maybe_list:
-        return maybe_list[0]
-
-    return maybe_list
-
-
 def validate_value(value_name, value, value_list):
     """Validate tag value is in the list of items and logs error if not."""
     valid_values = {v["tag"]: v["title"] for v in value_list}
diff --git a/homeassistant/components/nextbus/util.py b/homeassistant/components/nextbus/util.py
new file mode 100644
index 00000000000..c753c452546
--- /dev/null
+++ b/homeassistant/components/nextbus/util.py
@@ -0,0 +1,25 @@
+"""Utils for NextBus integration module."""
+from typing import Any
+
+
+def listify(maybe_list: Any) -> list[Any]:
+    """Return list version of whatever value is passed in.
+
+    This is used to provide a consistent way of interacting with the JSON
+    results from the API. There are several attributes that will either missing
+    if there are no values, a single dictionary if there is only one value, and
+    a list if there are multiple.
+    """
+    if maybe_list is None:
+        return []
+    if isinstance(maybe_list, list):
+        return maybe_list
+    return [maybe_list]
+
+
+def maybe_first(maybe_list: list[Any]) -> Any:
+    """Return the first item out of a list or returns back the input."""
+    if isinstance(maybe_list, list) and maybe_list:
+        return maybe_list[0]
+
+    return maybe_list