§  95.1511   Frequencies available.

   (a) The following table indicates the channel designations of
   frequencies available for assignment to eligible applicants within the
   5850–5925 MHz band for On-Board Units (OBUs):^1
   Channel No. Channel use Frequency range
   (MHz)
   170 Reserved 5850–5855
   172 Service Channel^2 5855–5865
   174 Service Channel 5865–5875
   175 Service Channel^3 5865–5885
   176 Service Channel 5875–5885
   178 Control Channel 5885–5895
   180 Service Channel 5895–5905
   181 Service Channel^3 5895–5915
   182 Service Channel 5905–5915
   184 Service Channel^4 5915–5925

   ^1The maximum output power for portable DSRCS–OBUs is 1.0 mW. See
   § 95.639(i).

   ^2Channel 172 is designated for public safety applications involving
   safety of life and property.

   ^3Channel Nos. 174/176 may be combined to create a twenty megahertz
   channel, designated Channel No. 175. Channels 180/182 may be combined
   to create a twenty-megahertz channel, designated Channel No. 181.

   ^4Channel 184 is designated for public safety applications involving
   safety of life and property.

   (b) Except as provided in paragraph (c) of this section, non-reserve
   DSRCS channels are available on a shared basis only for use in
   accordance with the Commission's rules. All licensees shall cooperate
   in the selection and use of channels in order to reduce interference.
   This includes monitoring for communications in progress and any other
   measures as may be necessary to minimize interference. Licensees
   suffering or causing harmful interference within a communications zone
   are expected to cooperate and resolve this problem by mutually
   satisfactory arrangements. If the licensees are unable to do so, the
   Commission may impose restrictions, including specifying the
   transmitter power, antenna height and direction, additional filtering,
   or area or hours of operation of the stations concerned. Further, the
   use of any channel at a given geographical location may be denied when,
   in the judgment of the Commission, its use at that location is not in
   the public interest; the use of any channel may be restricted as to
   specified geographical areas, maximum power, or such other operating
   conditions, contained in this part or in the station authorization.

   (c) Safety/public safety priority. The following access priority
   governs all DSRCS operations:

   (1) Communications involving the safety of life have access priority
   over all other DSRCS communications;

   (2) Subject to a control channel priority system management strategy
   (see ASTM E2213–03 DSRC Standard at § 4.1.1.2(4)), DSRCS communications
   involving public safety have access priority over all other DSRC
   communications not listed in paragraph (c)(1) of this section. On-Board
   Units (OBUs) operated by state or local governmental entities are
   presumptively engaged in public safety priority communications.

   (d) Non-priority communications. DSRCS communications not listed in
   paragraph (c) of this section, are non-priority communications. If a
   dispute arises concerning non-priority DSRCS–OBU communications with
   Roadside Units (RSUs), the provisions of § 90.377(e) and (f) of this
   chapter will apply. Disputes concerning non-priority DSRCS–OBU
   communications not associated with RSUs are governed by paragraph (b)
   of this section.

   [ 71 FR 52750 , Sept. 7, 2006]
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