Yes. In the United States, ADS-B may be used as the sole surveillance source for the provision of ATC services (including IFR-IFR separation) provided that the automation system ("radar scope") is designed to use it. There are no differences between ADS-B sole-source separation standards and SSR separation standards.
JO 7210.3 3–6–2 ATC Surveillance Source Use:
a. Surveillance sources that are approved for ATC use are Primary Radar, Secondary Radar, ADS-B and WAM. Approved ATC Surveillance Sources may be used for:
2. Vectoring aircraft to provide separation and radar navigation.
JO 7110.65 5–1–2 ATC Surveillance Source Use:
a. Secondary radar may be used as the sole display source as follows:
- In Class A airspace.
- Outside Class A airspace, or where mix of Class A airspace/non-Class A airspace exists, only when:
(a) Additional coverage is provided by secondary radar beyond that of the primary radar, or
(b) The primary radar is temporarily unusable or out of service. Advise pilots when these conditions exist, or
(c) A secondary radar system is the only source of radar data for the area of service. TERMINAL. Advise pilots when these conditions exist.
b. TERMINAL. Do not use secondary radar only to conduct surveillance (ASR) final approaches unless an emergency exists and the pilot concurs.
c. All procedures and requirements relating to ATC services using secondary radar targets apply to ATC services provided to targets derived from ADS-B and WAM.
JO 7110.65 5–5–4 Minima:
4. ADS-B may be integrated as an additional surveillance source when operating in FUSION mode. The display of ADS-B targets is permitted and does not require radar reinforcement.
5. The use of ADS-B only information may be used to support all radar requirements associated with any published instrument procedure that is annotated “Radar Required”.
3. Up to and including FL 230 where all the following conditions are met – 3 miles:
(b) The preferred sensor and/or ADS-B is providing reliable targets.