From 5fb305331beb0297c9d11a1412f01a73d059e900 Mon Sep 17 00:00:00 2001
From: Tzu-Jen Chan <126435471+tzujenchanmbd@users.noreply.github.com>
Date: Wed, 15 May 2024 23:42:54 -0400
Subject: [PATCH 1/7] Clarify from/to_stop_id desc in transfers.txt
---
gtfs/spec/en/reference.md | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/gtfs/spec/en/reference.md b/gtfs/spec/en/reference.md
index ab7eff4f..8e051902 100644
--- a/gtfs/spec/en/reference.md
+++ b/gtfs/spec/en/reference.md
@@ -625,8 +625,8 @@ For a given ordered pair of arriving trip and departing trip, the transfer with
| Field Name | Type | Presence | Description |
| ------ | ------ | ------ | ------ |
-| `from_stop_id` | Foreign ID referencing `stops.stop_id` | **Conditionally Required** | Identifies a stop or station where a connection between routes begins. If this field refers to a station, the transfer rule applies to all its child stops. Refering to a station is forbiden for `transfer_types` 4 and 5. |
-| `to_stop_id` | Foreign ID referencing `stops.stop_id` | **Conditionally Required** | Identifies a stop or station where a connection between routes ends. If this field refers to a station, the transfer rule applies to all child stops. Refering to a station is forbiden for `transfer_types` 4 and 5. |
+| `from_stop_id` | Foreign ID referencing `stops.stop_id` | **Required** | Identifies a stop (location_type=0) or station (location_type=1) where a connection between routes begins. If this field refers to a station, the transfer rule applies to all its child stops. It must refer to a stop if `transfer_type` is 4 or 5. |
+| `to_stop_id` | Foreign ID referencing `stops.stop_id` | **Required** | Identifies a stop (location_type=0) or station (location_type=1) where a connection between routes ends. If this field refers to a station, the transfer rule applies to all child stops. It must refer to a stop if `transfer_type` is 4 or 5. |
| `from_route_id` | Foreign ID referencing `routes.route_id` | Optional | Identifies a route where a connection begins.
If `from_route_id` is defined, the transfer will apply to the arriving trip on the route for the given `from_stop_id`.
If both `from_trip_id` and `from_route_id` are defined, the `trip_id` must belong to the `route_id`, and `from_trip_id` will take precedence. |
| `to_route_id` | Foreign ID referencing `routes.route_id` | Optional | Identifies a route where a connection ends.
If `to_route_id` is defined, the transfer will apply to the departing trip on the route for the given `to_stop_id`.
If both `to_trip_id` and `to_route_id` are defined, the `trip_id` must belong to the `route_id`, and `to_trip_id` will take precedence. |
| `from_trip_id` | Foreign ID referencing `trips.trip_id` | **Conditionally Required** | Identifies a trip where a connection between routes begins.
If `from_trip_id` is defined, the transfer will apply to the arriving trip for the given `from_stop_id`.
If both `from_trip_id` and `from_route_id` are defined, the `trip_id` must belong to the `route_id`, and `from_trip_id` will take precedence. REQUIRED if `transfer_type` is `4` or `5`. |
From 158ad1d35c819a0bb1f2c9db5592ab26da17ab25 Mon Sep 17 00:00:00 2001
From: Tzu-Jen Chan <126435471+tzujenchanmbd@users.noreply.github.com>
Date: Fri, 17 May 2024 08:16:45 -0400
Subject: [PATCH 2/7] Changed presence for transfers.from/to_stop_id
---
gtfs/spec/en/reference.md | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/gtfs/spec/en/reference.md b/gtfs/spec/en/reference.md
index 8e051902..f7823530 100644
--- a/gtfs/spec/en/reference.md
+++ b/gtfs/spec/en/reference.md
@@ -625,8 +625,8 @@ For a given ordered pair of arriving trip and departing trip, the transfer with
| Field Name | Type | Presence | Description |
| ------ | ------ | ------ | ------ |
-| `from_stop_id` | Foreign ID referencing `stops.stop_id` | **Required** | Identifies a stop (location_type=0) or station (location_type=1) where a connection between routes begins. If this field refers to a station, the transfer rule applies to all its child stops. It must refer to a stop if `transfer_type` is 4 or 5. |
-| `to_stop_id` | Foreign ID referencing `stops.stop_id` | **Required** | Identifies a stop (location_type=0) or station (location_type=1) where a connection between routes ends. If this field refers to a station, the transfer rule applies to all child stops. It must refer to a stop if `transfer_type` is 4 or 5. |
+| `from_stop_id` | Foreign ID referencing `stops.stop_id` | **Conditionally Required** | Identifies a stop (location_type=0) or station (location_type=1) where a connection between routes begins. If this field refers to a station, the transfer rule applies to all its child stops. It must refer to a stop if `transfer_type` is 4 or 5.
Conditionally Required:
- **Required** if `transfer_type` is 1, 2, or 3.
- **Optional** if `transfer_type` is 4 or 5. |
+| `to_stop_id` | Foreign ID referencing `stops.stop_id` | **Conditionally Required** | Identifies a stop (location_type=0) or station (location_type=1) where a connection between routes ends. If this field refers to a station, the transfer rule applies to all child stops. It must refer to a stop if `transfer_type` is 4 or 5.
Conditionally Required:
- **Required** if `transfer_type` is 1, 2, or 3.
- **Optional** if `transfer_type` is 4 or 5. |
| `from_route_id` | Foreign ID referencing `routes.route_id` | Optional | Identifies a route where a connection begins.
If `from_route_id` is defined, the transfer will apply to the arriving trip on the route for the given `from_stop_id`.
If both `from_trip_id` and `from_route_id` are defined, the `trip_id` must belong to the `route_id`, and `from_trip_id` will take precedence. |
| `to_route_id` | Foreign ID referencing `routes.route_id` | Optional | Identifies a route where a connection ends.
If `to_route_id` is defined, the transfer will apply to the departing trip on the route for the given `to_stop_id`.
If both `to_trip_id` and `to_route_id` are defined, the `trip_id` must belong to the `route_id`, and `to_trip_id` will take precedence. |
| `from_trip_id` | Foreign ID referencing `trips.trip_id` | **Conditionally Required** | Identifies a trip where a connection between routes begins.
If `from_trip_id` is defined, the transfer will apply to the arriving trip for the given `from_stop_id`.
If both `from_trip_id` and `from_route_id` are defined, the `trip_id` must belong to the `route_id`, and `from_trip_id` will take precedence. REQUIRED if `transfer_type` is `4` or `5`. |
From d02764dc537e86fc636bc46b89a96013178a1a4b Mon Sep 17 00:00:00 2001
From: Tzu-Jen Chan <126435471+tzujenchanmbd@users.noreply.github.com>
Date: Mon, 24 Jun 2024 15:41:34 -0400
Subject: [PATCH 3/7] Update gtfs/spec/en/reference.md
Co-authored-by: isabelle-dr
---
gtfs/spec/en/reference.md | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/gtfs/spec/en/reference.md b/gtfs/spec/en/reference.md
index f7823530..c94ac0b3 100644
--- a/gtfs/spec/en/reference.md
+++ b/gtfs/spec/en/reference.md
@@ -625,7 +625,7 @@ For a given ordered pair of arriving trip and departing trip, the transfer with
| Field Name | Type | Presence | Description |
| ------ | ------ | ------ | ------ |
-| `from_stop_id` | Foreign ID referencing `stops.stop_id` | **Conditionally Required** | Identifies a stop (location_type=0) or station (location_type=1) where a connection between routes begins. If this field refers to a station, the transfer rule applies to all its child stops. It must refer to a stop if `transfer_type` is 4 or 5.
Conditionally Required:
- **Required** if `transfer_type` is 1, 2, or 3.
- **Optional** if `transfer_type` is 4 or 5. |
+| `from_stop_id` | Foreign ID referencing `stops.stop_id` | **Conditionally Required** | Identifies a stop (`location_type=0`) or a station (`location_type=1`) where a connection between routes begins. If this field refers to a station, the transfer rule applies to all its child stops. It must refer to a stop if `transfer_type` is `4` or `5`.
Conditionally Required:
- **Required** if `transfer_type` is `1`, `2`, or `3`.
- Optional if `transfer_type` is `4` or `5`. |
| `to_stop_id` | Foreign ID referencing `stops.stop_id` | **Conditionally Required** | Identifies a stop (location_type=0) or station (location_type=1) where a connection between routes ends. If this field refers to a station, the transfer rule applies to all child stops. It must refer to a stop if `transfer_type` is 4 or 5.
Conditionally Required:
- **Required** if `transfer_type` is 1, 2, or 3.
- **Optional** if `transfer_type` is 4 or 5. |
| `from_route_id` | Foreign ID referencing `routes.route_id` | Optional | Identifies a route where a connection begins.
If `from_route_id` is defined, the transfer will apply to the arriving trip on the route for the given `from_stop_id`.
If both `from_trip_id` and `from_route_id` are defined, the `trip_id` must belong to the `route_id`, and `from_trip_id` will take precedence. |
| `to_route_id` | Foreign ID referencing `routes.route_id` | Optional | Identifies a route where a connection ends.
If `to_route_id` is defined, the transfer will apply to the departing trip on the route for the given `to_stop_id`.
If both `to_trip_id` and `to_route_id` are defined, the `trip_id` must belong to the `route_id`, and `to_trip_id` will take precedence. |
From 4454bb02ca8f9210ffa8b8aff0cf841abac9caca Mon Sep 17 00:00:00 2001
From: Tzu-Jen Chan <126435471+tzujenchanmbd@users.noreply.github.com>
Date: Mon, 24 Jun 2024 15:46:24 -0400
Subject: [PATCH 4/7] Update gtfs/spec/en/reference.md
Co-authored-by: isabelle-dr
---
gtfs/spec/en/reference.md | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/gtfs/spec/en/reference.md b/gtfs/spec/en/reference.md
index c94ac0b3..59cb7f45 100644
--- a/gtfs/spec/en/reference.md
+++ b/gtfs/spec/en/reference.md
@@ -626,7 +626,7 @@ For a given ordered pair of arriving trip and departing trip, the transfer with
| Field Name | Type | Presence | Description |
| ------ | ------ | ------ | ------ |
| `from_stop_id` | Foreign ID referencing `stops.stop_id` | **Conditionally Required** | Identifies a stop (`location_type=0`) or a station (`location_type=1`) where a connection between routes begins. If this field refers to a station, the transfer rule applies to all its child stops. It must refer to a stop if `transfer_type` is `4` or `5`.
Conditionally Required:
- **Required** if `transfer_type` is `1`, `2`, or `3`.
- Optional if `transfer_type` is `4` or `5`. |
-| `to_stop_id` | Foreign ID referencing `stops.stop_id` | **Conditionally Required** | Identifies a stop (location_type=0) or station (location_type=1) where a connection between routes ends. If this field refers to a station, the transfer rule applies to all child stops. It must refer to a stop if `transfer_type` is 4 or 5.
Conditionally Required:
- **Required** if `transfer_type` is 1, 2, or 3.
- **Optional** if `transfer_type` is 4 or 5. |
+| `to_stop_id` | Foreign ID referencing `stops.stop_id` | **Conditionally Required** | Identifies a stop (`location_type=0`) or a station (`location_type=1`) where a connection between routes ends. If this field refers to a station, the transfer rule applies to all child stops. It must refer to a stop if `transfer_type` is 4 or 5.
Conditionally Required:
- **Required** if `transfer_type` is `1`, `2`, or `3`.
- Optional if `transfer_type` is `4` or `5`. |
| `from_route_id` | Foreign ID referencing `routes.route_id` | Optional | Identifies a route where a connection begins.
If `from_route_id` is defined, the transfer will apply to the arriving trip on the route for the given `from_stop_id`.
If both `from_trip_id` and `from_route_id` are defined, the `trip_id` must belong to the `route_id`, and `from_trip_id` will take precedence. |
| `to_route_id` | Foreign ID referencing `routes.route_id` | Optional | Identifies a route where a connection ends.
If `to_route_id` is defined, the transfer will apply to the departing trip on the route for the given `to_stop_id`.
If both `to_trip_id` and `to_route_id` are defined, the `trip_id` must belong to the `route_id`, and `to_trip_id` will take precedence. |
| `from_trip_id` | Foreign ID referencing `trips.trip_id` | **Conditionally Required** | Identifies a trip where a connection between routes begins.
If `from_trip_id` is defined, the transfer will apply to the arriving trip for the given `from_stop_id`.
If both `from_trip_id` and `from_route_id` are defined, the `trip_id` must belong to the `route_id`, and `from_trip_id` will take precedence. REQUIRED if `transfer_type` is `4` or `5`. |
From 44f45786b402b6788076c8dfc19ee30c8a57375d Mon Sep 17 00:00:00 2001
From: Tzu-Jen Chan <126435471+tzujenchanmbd@users.noreply.github.com>
Date: Mon, 24 Jun 2024 15:57:19 -0400
Subject: [PATCH 5/7] Update gtfs/spec/en/reference.md
Co-authored-by: isabelle-dr
---
gtfs/spec/en/reference.md | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/gtfs/spec/en/reference.md b/gtfs/spec/en/reference.md
index 59cb7f45..7e93b40c 100644
--- a/gtfs/spec/en/reference.md
+++ b/gtfs/spec/en/reference.md
@@ -629,7 +629,7 @@ For a given ordered pair of arriving trip and departing trip, the transfer with
| `to_stop_id` | Foreign ID referencing `stops.stop_id` | **Conditionally Required** | Identifies a stop (`location_type=0`) or a station (`location_type=1`) where a connection between routes ends. If this field refers to a station, the transfer rule applies to all child stops. It must refer to a stop if `transfer_type` is 4 or 5.
Conditionally Required:
- **Required** if `transfer_type` is `1`, `2`, or `3`.
- Optional if `transfer_type` is `4` or `5`. |
| `from_route_id` | Foreign ID referencing `routes.route_id` | Optional | Identifies a route where a connection begins.
If `from_route_id` is defined, the transfer will apply to the arriving trip on the route for the given `from_stop_id`.
If both `from_trip_id` and `from_route_id` are defined, the `trip_id` must belong to the `route_id`, and `from_trip_id` will take precedence. |
| `to_route_id` | Foreign ID referencing `routes.route_id` | Optional | Identifies a route where a connection ends.
If `to_route_id` is defined, the transfer will apply to the departing trip on the route for the given `to_stop_id`.
If both `to_trip_id` and `to_route_id` are defined, the `trip_id` must belong to the `route_id`, and `to_trip_id` will take precedence. |
-| `from_trip_id` | Foreign ID referencing `trips.trip_id` | **Conditionally Required** | Identifies a trip where a connection between routes begins.
If `from_trip_id` is defined, the transfer will apply to the arriving trip for the given `from_stop_id`.
If both `from_trip_id` and `from_route_id` are defined, the `trip_id` must belong to the `route_id`, and `from_trip_id` will take precedence. REQUIRED if `transfer_type` is `4` or `5`. |
+| `from_trip_id` | Foreign ID referencing `trips.trip_id` | **Conditionally Required** | Identifies a trip where a connection between routes begins.
If `from_trip_id` is defined, the transfer will apply to the arriving trip for the given `from_stop_id`.
If both `from_trip_id` and `from_route_id` are defined, the `trip_id` must belong to the `route_id`, and `from_trip_id` will take precedence.
Conditionally Required:
- **Required** if `transfer_type` is `4` or `5`.
- Optional otherwise. |
| `to_trip_id` | Foreign ID referencing `trips.trip_id` | **Conditionally Required** | Identifies a trip where a connection between routes ends.
If `to_trip_id` is defined, the transfer will apply to the departing trip for the given `to_stop_id`.
If both `to_trip_id` and `to_route_id` are defined, the `trip_id` must belong to the `route_id`, and `to_trip_id` will take precedence. REQUIRED if `transfer_type` is `4` or `5`. |
| `transfer_type` | Enum | **Required** | Indicates the type of connection for the specified (`from_stop_id`, `to_stop_id`) pair. Valid options are:
`0` or empty - Recommended transfer point between routes.
`1` - Timed transfer point between two routes. The departing vehicle is expected to wait for the arriving one and leave sufficient time for a rider to transfer between routes.
`2` - Transfer requires a minimum amount of time between arrival and departure to ensure a connection. The time required to transfer is specified by `min_transfer_time`.
`3` - Transfers are not possible between routes at the location.
`4` - Passengers can transfer from one trip to another by staying onboard the same vehicle (an "in-seat transfer"). More details about this type of transfer [below](#linked-trips).
`5` - In-seat transfers are not allowed between sequential trips. The passenger must alight from the vehicle and re-board. More details about this type of transfer [below](#linked-trips). |
| `min_transfer_time` | Non-negative integer | Optional | Amount of time, in seconds, that must be available to permit a transfer between routes at the specified stops. The `min_transfer_time` should be sufficient to permit a typical rider to move between the two stops, including buffer time to allow for schedule variance on each route. |
From 9640f7b6d2963f7c33da903571084bd459d325d0 Mon Sep 17 00:00:00 2001
From: Tzu-Jen Chan <126435471+tzujenchanmbd@users.noreply.github.com>
Date: Mon, 24 Jun 2024 16:01:43 -0400
Subject: [PATCH 6/7] Editorial changes on to_trip_id
---
gtfs/spec/en/reference.md | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/gtfs/spec/en/reference.md b/gtfs/spec/en/reference.md
index 7e93b40c..e06db884 100644
--- a/gtfs/spec/en/reference.md
+++ b/gtfs/spec/en/reference.md
@@ -630,7 +630,7 @@ For a given ordered pair of arriving trip and departing trip, the transfer with
| `from_route_id` | Foreign ID referencing `routes.route_id` | Optional | Identifies a route where a connection begins.
If `from_route_id` is defined, the transfer will apply to the arriving trip on the route for the given `from_stop_id`.
If both `from_trip_id` and `from_route_id` are defined, the `trip_id` must belong to the `route_id`, and `from_trip_id` will take precedence. |
| `to_route_id` | Foreign ID referencing `routes.route_id` | Optional | Identifies a route where a connection ends.
If `to_route_id` is defined, the transfer will apply to the departing trip on the route for the given `to_stop_id`.
If both `to_trip_id` and `to_route_id` are defined, the `trip_id` must belong to the `route_id`, and `to_trip_id` will take precedence. |
| `from_trip_id` | Foreign ID referencing `trips.trip_id` | **Conditionally Required** | Identifies a trip where a connection between routes begins.
If `from_trip_id` is defined, the transfer will apply to the arriving trip for the given `from_stop_id`.
If both `from_trip_id` and `from_route_id` are defined, the `trip_id` must belong to the `route_id`, and `from_trip_id` will take precedence.
Conditionally Required:
- **Required** if `transfer_type` is `4` or `5`.
- Optional otherwise. |
-| `to_trip_id` | Foreign ID referencing `trips.trip_id` | **Conditionally Required** | Identifies a trip where a connection between routes ends.
If `to_trip_id` is defined, the transfer will apply to the departing trip for the given `to_stop_id`.
If both `to_trip_id` and `to_route_id` are defined, the `trip_id` must belong to the `route_id`, and `to_trip_id` will take precedence. REQUIRED if `transfer_type` is `4` or `5`. |
+| `to_trip_id` | Foreign ID referencing `trips.trip_id` | **Conditionally Required** | Identifies a trip where a connection between routes ends.
If `to_trip_id` is defined, the transfer will apply to the departing trip for the given `to_stop_id`.
If both `to_trip_id` and `to_route_id` are defined, the `trip_id` must belong to the `route_id`, and `to_trip_id` will take precedence.
Conditionally Required:
- **Required** if `transfer_type` is `4` or `5`.
- Optional otherwise. |
| `transfer_type` | Enum | **Required** | Indicates the type of connection for the specified (`from_stop_id`, `to_stop_id`) pair. Valid options are:
`0` or empty - Recommended transfer point between routes.
`1` - Timed transfer point between two routes. The departing vehicle is expected to wait for the arriving one and leave sufficient time for a rider to transfer between routes.
`2` - Transfer requires a minimum amount of time between arrival and departure to ensure a connection. The time required to transfer is specified by `min_transfer_time`.
`3` - Transfers are not possible between routes at the location.
`4` - Passengers can transfer from one trip to another by staying onboard the same vehicle (an "in-seat transfer"). More details about this type of transfer [below](#linked-trips).
`5` - In-seat transfers are not allowed between sequential trips. The passenger must alight from the vehicle and re-board. More details about this type of transfer [below](#linked-trips). |
| `min_transfer_time` | Non-negative integer | Optional | Amount of time, in seconds, that must be available to permit a transfer between routes at the specified stops. The `min_transfer_time` should be sufficient to permit a typical rider to move between the two stops, including buffer time to allow for schedule variance on each route. |
From e785501bdcacbf1ec2c311274ce1fa3e29e4fe1d Mon Sep 17 00:00:00 2001
From: Tzu-Jen Chan <126435471+tzujenchanmbd@users.noreply.github.com>
Date: Mon, 8 Jul 2024 12:29:43 -0400
Subject: [PATCH 7/7] Add "location_type=0" for "stop"
---
gtfs/spec/en/reference.md | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/gtfs/spec/en/reference.md b/gtfs/spec/en/reference.md
index e06db884..05040081 100644
--- a/gtfs/spec/en/reference.md
+++ b/gtfs/spec/en/reference.md
@@ -625,8 +625,8 @@ For a given ordered pair of arriving trip and departing trip, the transfer with
| Field Name | Type | Presence | Description |
| ------ | ------ | ------ | ------ |
-| `from_stop_id` | Foreign ID referencing `stops.stop_id` | **Conditionally Required** | Identifies a stop (`location_type=0`) or a station (`location_type=1`) where a connection between routes begins. If this field refers to a station, the transfer rule applies to all its child stops. It must refer to a stop if `transfer_type` is `4` or `5`.
Conditionally Required:
- **Required** if `transfer_type` is `1`, `2`, or `3`.
- Optional if `transfer_type` is `4` or `5`. |
-| `to_stop_id` | Foreign ID referencing `stops.stop_id` | **Conditionally Required** | Identifies a stop (`location_type=0`) or a station (`location_type=1`) where a connection between routes ends. If this field refers to a station, the transfer rule applies to all child stops. It must refer to a stop if `transfer_type` is 4 or 5.
Conditionally Required:
- **Required** if `transfer_type` is `1`, `2`, or `3`.
- Optional if `transfer_type` is `4` or `5`. |
+| `from_stop_id` | Foreign ID referencing `stops.stop_id` | **Conditionally Required** | Identifies a stop (`location_type=0`) or a station (`location_type=1`) where a connection between routes begins. If this field refers to a station, the transfer rule applies to all its child stops. It must refer to a stop (`location_type=0`) if `transfer_type` is `4` or `5`.
Conditionally Required:
- **Required** if `transfer_type` is `1`, `2`, or `3`.
- Optional if `transfer_type` is `4` or `5`. |
+| `to_stop_id` | Foreign ID referencing `stops.stop_id` | **Conditionally Required** | Identifies a stop (`location_type=0`) or a station (`location_type=1`) where a connection between routes ends. If this field refers to a station, the transfer rule applies to all child stops. It must refer to a stop (`location_type=0`) if `transfer_type` is 4 or 5.
Conditionally Required:
- **Required** if `transfer_type` is `1`, `2`, or `3`.
- Optional if `transfer_type` is `4` or `5`. |
| `from_route_id` | Foreign ID referencing `routes.route_id` | Optional | Identifies a route where a connection begins.
If `from_route_id` is defined, the transfer will apply to the arriving trip on the route for the given `from_stop_id`.
If both `from_trip_id` and `from_route_id` are defined, the `trip_id` must belong to the `route_id`, and `from_trip_id` will take precedence. |
| `to_route_id` | Foreign ID referencing `routes.route_id` | Optional | Identifies a route where a connection ends.
If `to_route_id` is defined, the transfer will apply to the departing trip on the route for the given `to_stop_id`.
If both `to_trip_id` and `to_route_id` are defined, the `trip_id` must belong to the `route_id`, and `to_trip_id` will take precedence. |
| `from_trip_id` | Foreign ID referencing `trips.trip_id` | **Conditionally Required** | Identifies a trip where a connection between routes begins.
If `from_trip_id` is defined, the transfer will apply to the arriving trip for the given `from_stop_id`.
If both `from_trip_id` and `from_route_id` are defined, the `trip_id` must belong to the `route_id`, and `from_trip_id` will take precedence.
Conditionally Required:
- **Required** if `transfer_type` is `4` or `5`.
- Optional otherwise. |