This subpart contains rules that apply only to ITS On-Board Units (OBUs) transmitting in the 5895-5925 MHz frequency band. ITU Roadside Units (RSUs) are authorized under part 90, subpart M of this chapter.

Cellular Vehicle to Everything (C-V2X). See § 90.7 of this chapter.

Dedicated Short-Range Communications Services (DSRCS). See § 90.7 of this chapter.

Geofenced Onboard Unit. An OBU that incorporates geofencing to protect the appropriate areas around federal radiolocation sites currently enumerated in 47 CFR 90.387(b) by reducing power within those areas. Such OBUs programmed with information about these sites have the option of operation under the transmit power limits set forth in section 95.3404 of this subpart.

Geofencing. For the purposes of this subpart, geofencing is used to create a virtual boundary around a physical location by enabling a radiofrequency device using a geolocation capability to determine whether its geographic coordinates are within a defined geographic area.

On-Board Unit (OBU). See § 90.7 of this chapter.

Roadside Unit (RSU). See § 90.7 of this chapter.

C-V2X OBUs may transmit signals to other C-V2X OBUs and to C-V2X Roadside Units (RSUs) authorized under part 90 of this chapter or any licensed commercial mobile radio service station as defined in part 20 of this chapter.

(a) Each C-V2X OBU that operates or is intended to operate in the 5895-5925 MHz band must be certified in accordance with this subpart and subpart J of part 2 of this chapter.

(b) A grant of equipment certification for this subpart will not be issued for any C-V2X OBU transmitter type that fails to comply with all of the applicable rules in this subpart.

C-V2X OBUs are permitted to operate in the 5895-5925 MHz band.

(a) The following power limits apply for OBUs without a geofencing capability at all locations and for OBUs with a geofencing capability when operating within any coordination zone specified in § 90.387(b) of this chapter:

(1) 10 MHz channel (5895-5905 MHz): 23 dBm/10 MHz EIRP;

(2) 10 MHz channel (5905-5915 MHz): 33 dBm/10 MHz EIRP, reduced to 27 dBm within ±5 degrees of horizontal;

(3) 10 MHz channel (5915-5925 MHz): 33 dBm/10 MHz EIRP, reduced to 27 dBm within ±5 degrees of horizontal;

(4) 20 MHz channel (5895-5915 MHz): 23 dBm/20 MHz EIRP;

(5) 20 MHz channel (5905-5925 MHz): 33 dBm/20 MHz EIRP, reduced to 27 dBm within ±5 degrees of horizontal; and

(6) 30 MHz channel: 23 dBm/30 MHz EIRP.

(b) The following power limits apply to OBUs with a geofencing capability when operating at locations outside any coordination zone specified in § 90.387(b) of this chapter:

(1) 10 MHz channel (5895-5905 MHz): 33 dBm/10 MHz EIRP;

(2) 10 MHz channel (5905-5915 MHz): 33 dBm/10 MHz EIRP;

(3) 10 MHz channel (5915-5925 MHz): 33 dBm/10 MHz EIRP;

(4) 20 MHz channel (5895-5915 MHz): 33 dBm/20 MHz EIRP;

(5) 20 MHz channel (5905-5925 MHz): 33 dBm/20 MHz EIRP; and

(6) 30 MHz channel: 33 dBm/30 MHz EIRP.

(c) For purposes of this section, the EIRP is root mean squared (RMS) measured as the maximum EIRP toward the horizon or horizontal, whichever is greater, of the gain associated with the main or center of the transmission beam.

(d) For purposes of this section, a portable unit is a transmitting device designed to be used so that the radiating structure(s) of the device is/are within 20 centimeters of the body of the user.

(a) C-V2X OBUs must comply with the following out-of-band emissions limits. Conducted emissions limits measured at the antenna input shall not exceed:

(1) −16 dBm/100 kHz within ±1 megahertz of the band edges;

(2) −13 dBm/MHz within ±1 megahertz to ±5 megahertz of the band edges;

(3) −16 dBm/MHz within ±5 megahertz to ±30 megahertz of the band edges; and

(4) −28 dBm/MHz beyond 30 megahertz from the band edges.

On-Board Units (OBUs) may transmit signals to other OBUs and to Roadside Units (RSUs), which are authorized under part 90 of this chapter.

(a) Each Dedicated Short Range Communications On-Board Unit IDSRCS-OBU) that operates or is intended to operate in the DSRCS must be certified in accordance with this subpart and subpart J of part 2 of this chapter.

(b) A grant of equipment certification for this subpart will not be issued for any OBU transmitter type that fails to comply with all of the applicable rules in this subpart.

DSRCS On-Board Units (OBUs) are permitted to operate in the 5895-5925 MHz band.

(a) The maximum output power for portable DSRCS On-Board Unit (OBU) transmitter types is 1.0 mW.

(b) The power limits in paragraph (a) of this section may be referenced to the antenna input, so that cable losses are taken into account.

(c) For purposes of this section, a portable unit is a transmitting device designed to be used so that the radiating structure(s) of the device is/are within 20 centimeters of the body of the user.

(a) DSRCS On-Board Unit (OBU) transmitter types operating in the 5895-5925 MHz band must be designed to comply with the technical standard Institute of Electrical and Electronics Engineers (IEEE) 802.11p-2010.

(b) 802.11p-2010, IEEE Standard for Information technology—Local and metropolitan area networks—Specific requirements—Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications Amendment 6: Wireless Access in Vehicular Environments, 15 July 2010 is incorporated by reference into this section with the approval of the Director of the Federal Register under 5 U.S.C. 552(a) and 1 CFR part 51. All approved material is available for inspection at the address of the FCC's main office indicated in 47 CFR 0.401(a) and is available from Institute of Electrical and Electronics Engineers (IEEE), 3025 Boardwalk Drive, Suite 220, Ann Arbor, MI 48108, 1-855-999-9870, www.techstreet.com/ieee. It is also available for inspection at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, email [email protected] or go to www.archives.gov/federal-register/cfr/ibrlocations.html.