Continental demonstrated its enhanced cruise control at the TechShow in Hannover. This adaptiv cruise control gets information from the electronic horizon application (eHorizon) that is using data from a Local Dynamic Map (LDM). LDMs get data (information from other cars or from roadside units) e.g. via C-ITS messages such as CAM and DENM from ETSI, or BSM from SAE. Alternatively data can be received from and transmitted to a cloude using CN communications as implemented by Continental.
(Graphics from http://www.car-it.com/conti-zeigt-vernetzten-tempomaten/id-0042990; read more there in German)
ISO TC204 WG18 recently published the LDM standard ISO/TS 18750:2015 "Intelligent transport systems -- Cooperative systems -- Definition of a global concept for Local Dynamic Maps" which is already in the process to be upgraded to a full International Standard and an EN from CEN.
In case of questions, please contact the editor of ISO/TS 18750.