Add cemv_support field in agency.txt and routes.txt (#545)

* Add cemv_support in agency.txt and routes.txt

* Update description to incorporate feedback from April WGM

Author: Sergiodero

gtfs/spec/en/reference.md

@@ -197,6 +197,7 @@ Primary key (`agency_id`)
 |  `agency_phone` | Phone number | Optional | A voice telephone number for the specified agency. This field is a string value that presents the telephone number as typical for the agency's service area. It may contain punctuation marks to group the digits of the number. Dialable text (for example, TriMet's "503-238-RIDE") is permitted, but the field must not contain any other descriptive text. |
 |  `agency_fare_url` | URL | Optional | URL of a web page where a rider can purchase tickets or other fare instruments for that agency, or a web page containing information about that agency's fares. |
 |  `agency_email` | Email | Optional | Email address actively monitored by the agency’s customer service department. This email address should be a direct contact point where transit riders can reach a customer service representative at the agency. |
+|  `cemv_support` | Enum | Optional | Indicates if riders can access a transit service (i.e., trip) associated with this agency by using a contactless EMV (Europay, Mastercard, and Visa) card or mobile device as fare media at a fare validator (such as in pay-as-you-go or open-loop systems). This field does not indicate that cEMV can be used to purchase other fare products or to add value to another fare media. <br><br>Support for cEMVs should only be indicated if all services under this agency are accessible with the use of cEMV cards or mobile devices as fare media. <br><br>Valid options are: <br><br>`0` or empty - No cEMV information for trips associated with this agency. <br>`1` - Riders may use cEMVs as fare media for trips associated with this agency. <br>`2` - cEMVs are not supported as fare media for trips associated with this agency. <br><br>If both `agency.cemv_support` and `routes.cemv_support` are provided for the same service, the value in `routes.cemv_support` shall take precedence. <br><br> This field is independent of all other fare-related files and may be used separately.  If there is conflicting information between this field and any fare-related file (such as `fare_media.txt`, `fare_products.txt`, or `fare_leg_rules.txt`), the information in those files shall take precedence over `agency.cemv_support`.|
 
 ### stops.txt
 
@@ -244,6 +245,8 @@ Primary key (`route_id`)
 |  `continuous_pickup` | Enum | **Conditionally Forbidden** | Indicates that the rider can board the transit vehicle at any point along the vehicle’s travel path as described by [shapes.txt](#shapestxt), on every trip of the route. Valid options are: <br><br>`0` - Continuous stopping pickup. <br>`1` or empty - No continuous stopping pickup. <br>`2` - Must phone agency to arrange continuous stopping pickup. <br>`3` - Must coordinate with driver to arrange continuous stopping pickup.  <br><br>Values for `routes.continuous_pickup` may be overridden by defining values in `stop_times.continuous_pickup` for specific `stop_time`s along the route. <br><br>**Conditionally Forbidden**:<br>- Any value other than `1` or empty is **Forbidden** if `stop_times.start_pickup_drop_off_window` or `stop_times.end_pickup_drop_off_window` are defined for any trip of this route.<br> - Optional otherwise. |
 |  `continuous_drop_off` | Enum | **Conditionally Forbidden** | Indicates that the rider can alight from the transit vehicle at any point along the vehicle’s travel path as described by [shapes.txt](#shapestxt), on every trip of the route. Valid options are: <br><br>`0` - Continuous stopping drop off. <br>`1` or empty - No continuous stopping drop off. <br>`2` - Must phone agency to arrange continuous stopping drop off. <br>`3` - Must coordinate with driver to arrange continuous stopping drop off. <br><br>Values for `routes.continuous_drop_off` may be overridden by defining values in `stop_times.continuous_drop_off` for specific `stop_time`s along the route. <br><br>**Conditionally Forbidden**:<br>- Any value other than `1` or empty is **Forbidden** if `stop_times.start_pickup_drop_off_window` or `stop_times.end_pickup_drop_off_window` are defined for any trip of this route.<br> - Optional otherwise. |
 | `network_id` | ID | **Conditionally Forbidden** | Identifies a group of routes. Multiple rows in [routes.txt](#routestxt) may have the same `network_id`.<br><br>Conditionally Forbidden:<br>- **Forbidden** if the [route_networks.txt](#route_networkstxt) file exists.<br>- Optional otherwise. 
+|  `cemv_support` | Enum | Optional | Indicates if riders can access a transit service (i.e., trip) associated with this route by using a contactless EMV (Europay, Mastercard, and Visa) card or mobile device as fare media at a fare validator (such as in pay-as-you-go or open-loop systems). This field does not indicate that cEMV can be used to purchase other fare products or to add value to another fare media. <br><br> Support for cEMVs should only be indicated if all services under this route are accessible with the use of cEMV cards or mobile devices as fare media. <br><br> Valid options are: <br><br>`0` or empty - No cEMV information for trips associated with this route. <br>`1` - Riders may use cEMVs as fare media for trips associated with this route. <br>`2` - cEMVs are not supported as fare media for trips associated with this route. <br><br> If both `agency.cemv_support` and `routes.cemv_support` are provided for the same service, the value in `routes.cemv_support` shall take precedence. <br><br> This field is independent of all other fare-related files and may be used separately.  If there is conflicting information between this field and any fare-related file (such as `fare_media.txt`, `fare_products.txt`, or `fare_leg_rules.txt`), the information in those files shall take precedence over `agency.cemv_support`.
+|
 
 ### trips.txt