Usually whenever there is an extension of a data model it is a minor update so it is reported in the widget Announcements of the frontpage
However, the update of the RoadSegment data model is so important (more than 30 new attributes) that it is worthy to be announced this way. It is also noticeable the emphasis on the cycling information. Thanks to IUDX for their contribution. It is available in the Transportation subject.
At home -> Search -> json export of attributes database of smart data models is the full database of attributes (more than 18000), see the statistics page as an array of JSON objects.
Fields for each attribute
_id: identifier of the item
property: the name of the attribute
dataModel: the data model this attribute is present
repoName: the subject this data model belongs to
description: the description of the attribute
typeNGSI: Whether it is a property, Geoproperty, or relationship
modelTags: inherited from the data model tags
license: link to the license for the data model
schemaVersion: version of the data model
type: data type
model: when available the reference model for the attribute
units: when available the recommended units for the attribute
format: either date, or time, or date-time, or URI, etc the format of the attribute
Organization data model, mapped from its definition at schema.org, has been published in a specific subject Organization.
The Noise Pollution data model and the AirQualityForecast have been published on the Environment subject. The first one merges specific and punctual noise measurements (coming, e.g. from NoiseLevelObservation entities) into average parameters referred to city areas, providing more city-related data about noise pollution status and evolution. The second one helps to store the forecast about the quality of air for a specific period.
The data model for TransitManagement has been published based on the contribution of IUDX. It belongs to the Urban mobility subject.
If have approached the Smart Data Models Program (SDM) for the first time and you want to become a contributor there are some technical concepts that you need to know about the elements compiled at SDM.
Once checked this presentation maybe you want to review the contribution manual
The data models AirQualityMonitoring, AirQualityObserved, and NoiseLevelObserved have been extended with additional attributes. These data models have been tested in three use cases in the cities/regions of Murcia / Molina de Segura, (Spain), Nice Cote D’azur (France), and Flanders (Belgium).
Soon other data models will be released thanks to this collaboration.
Smart Data Models are openly licensed. It means that nobody is asking you for anything to use them. Indeed it is possible to modify the models and share them.
Anyhow if you are interested in getting some dissemination because you are using them, check the new menu entry (I am already using it!) with a form in which you can be listed as an adopter and get in return dissemination on LinkedIn, Twitter, and in the smart data models blog.
This video shows a new framework of AWS for smart territories where the smart data models play a significant role in an AWS global solution based on a NGSI platform.
Currently, the number of available data models exceeds 800. Several use cases are presented during this 30 min video.
After growing in options and service, it was necessary to update the main menu (not only to make it more legible), but also to make it more natural.
Explore the tools section where all the available services are listed together
Documentation contains everything related to the documentation generated at the SDM and that can be necessary for several tasks
About include mostly the same elements (the starting point and FAQs)
Search remains the same because is one of the most used resources
Community for the interconnection between users and contributors.
New data model request to learn how to start
Slack channel
Discord channel #smart-data-models
help on discord
Invitation to discord 
Validate a payload with a data model(external)
