363-206-295
Applications
2-38
Issue 1
December 1997
Intelligent Vehicle Highway System (IVHS)
Applications
2
IVHSs are beginning and will grow to play a major role in the roadway systems of
the future. Their primary use in the near-term is to reduce congestion. This is
done in several ways.
■
The IVHS provides more efficient and optimal traffic management which
attempts to avoid congestion in the first place.
■
The IHVS provides better management of congestion caused by random
occurrences such as accidents or breakdowns.
■
The IVHS eliminates many of the foreseeable causes of congestion, such
as toll-taking, by automating these functions.
In the future, these systems will also help travelers plan their routes by providing
up-to-the-minute traffic and highway information. The DDM-2000 OC-3 and
OC-12 Multiplexers are a perfect match for the networking needs of these
systems.
Figure 2-24 shows a typical IVHS application. An IVHS network calls for carrying
data between roadside equipment, such as traffic counters, speed sensors,
variable messaging signs, video cameras, toll-taking equipment, pay phones and
call boxes, and a traffic operations center where incoming data is processed and
responses are generated. The DDM-2000 OC-3 and OC-12 Multiplexers provide
a perfect backbone for carrying this information. The DDM-2000 OC-3 Multiplexer
SONET ring capability, when coupled with diverse fiber routing on opposite sides
of the roadway, makes the backbone completely self-healing in the face of
failures. Such reliability is absolutely essential, especially as travelers come to
depend more and more on IVHS networks. The VT1.5 and STS-1 bandwidth
management capabilities of the DDM-2000 OC-3 and OC-12 Multiplexers allow
flexible allocation of bandwidth to match the dynamics of a roadway system,
which is undergoing unpredictable changes in traffic patterns, breakdowns,
accidents, and repairs. Such bandwidth management provides a system which
meets the IVHS network needs in a cost-effective manner. DDM-2000 OC-3 and
OC-12 Multiplexers completely meet the transmission needs of an IVHS network.
Содержание DDM-2000 OC-12
Страница 1: ...363 206 295 Issue 1 December 1997 DDM 2000 OC 12 Multiplexer Release 7 0 User Service Manual Volume I ...
Страница 37: ...Tables xxxviii Issue 1 December 1997 A A SONET Overview A 1 SONET Payloads A 18 A 2 SONET Transport Rates A 19 ...
Страница 506: ...INS PROG 8 of 8 Page INS PROG COMMANDS RELATED rtrv eqpt rtrv ne OC 12 DDM 2000 1997 December 1 Issue 11 89 ...
Страница 528: ...RTRV ATTR ALM 2 of 2 Page RTRV ATTR ALM COMMANDS RELATED set attr alm OC 12 DDM 2000 1997 December 1 Issue 11 111 ...
Страница 565: ...RTRV OC3 3 of 3 Page RTRV OC3 COMMANDS RELATED rtrv sync 11 148 1997 December 1 Issue OC 12 DDM 2000 ...
Страница 664: ...SET FEAT 3 of 3 Page SET FEAT COMMANDS RELATED rtrv feat OC 12 DDM 2000 1997 December 1 Issue 11 247 ...
Страница 766: ... Ctl T TOGGLE 2 of 2 Page Ctl T TOGGLE COMMANDS RELATED logout rlgn OC 12 DDM 2000 1997 December 1 Issue 11 349 ...
Страница 847: ...Multiplexer OC 12 DDM 2000 7 Release TARP TOP Manual User Service II Volume 363 206 295 1 Issue 1997 December ...
Страница 867: ...363 206 295 TOP Maintenance and Operation BLANK LEFT INTENTIONALLY PAGE THIS 12 1997 December 1 Issue ...
Страница 1145: ...Order Circuit 363 206 295 NTP 029 1 of 1 Page 1997 December 1 Issue Unused LISTED ORDER IN BELOW ITEMS DO TO GO DETAILS FOR ...
Страница 1146: ...Order Circuit 363 206 295 NTP 030 1 of 1 Page 1997 December 1 Issue Unused LISTED ORDER IN BELOW ITEMS DO TO GO DETAILS FOR ...
Страница 1182: ...Turnup System 363 206 295 NTP 033 1 of 1 Page 1997 December 1 Issue Unused LISTED ORDER IN BELOW ITEMS DO TO GO DETAILS FOR ...
Страница 1243: ...Clearing Trouble 363 206 295 TAP 107 1 of 1 Page 1997 December 1 Issue Unused ...
Страница 1393: ...363 206 295 DLP 513 1 of 1 Page 1997 December 1 Issue Unused ...
Страница 1394: ...363 206 295 DLP 514 1 of 1 Page 1997 December 1 Issue Unused ...
Страница 1456: ...363 206 295 DLP 523 7 of 7 Page 1997 December 1 Issue OC 12 via Access Broadcast Video for Cross connections of Example 4 Figure ...
Страница 1465: ...DLP 525 363 206 295 1997 December 1 Issue 6 of 2 Page Schematic Ring Virtual ATM Sample 1 Figure ...
Страница 1469: ...DLP 525 363 206 295 1997 December 1 Issue 6 of 6 Page Ring Virtual ATM OC 12 DDM 2000 for Cross connections of Example 4 Figure ...
Страница 1565: ...363 206 295 DLP 543 6 of 5 Page 1997 December 1 Issue Network Broadcast Video of Test Transmission 2 Figure ...
Страница 1566: ...DLP 543 363 206 295 1997 December 1 Issue 6 of 6 Page Network Ring Virtual ATM of Test Transmission 3 Figure ...