Complex Networked System Scenario:
A future Intelligent Vehicle Highway System (IVHS) provides transportation of people and cargo from portal-to-portal, i.e. their choice of origin and destination
within a large city and suburban areas (within a 25 kilometer by 25 kilometer square operational area from the city center). The IVHS system consists of:• A central monitoring hub, which maintains overall situational awareness of the IVHS system, including the position and status of all IVHS vehicles, IVHS roads,
hazards/obstacles, and the ecosystem in which the IVHS system resides and depends on (e.g. communications coverage, electrical power, fuel) or is effected by (e.g.
weather, laws & regulations).• An average of 5,000 mobile hub node vehicles (e.g. emergency vehicles including police, ambulance, fire-truck vehicles and tow-truck vehicles), each of which
maintains situational awareness of their local area (an average of a ½ kilometer by ½ kilometer square regional area) including the position and status of all IVHS
vehicles, IVHS roads, environmental conditions and hazards/obstacles in their regional area. Overall ecosystem awareness is obtained via the central monitoring hub,
although events in their regional area (e.g. weather conditions such as localized flooding areas) must be reported to the central monitoring hub. Each mobile hub node
vehicle has high-power communications to maintain nearly-constant direct contact (99% of the time) with the central monitoring hub—for the remaining 1% of the time,
each mobile hub node vehicle uses one nearby mobile hub node vehicle as a relay service to ensure constant linkage (direct or relayed) to the central monitoring hub.
(Assume a uniform statistical distribution of mobile hub node vehicles within the 25km-by-25km operational area.) Each mobile hub node constantly reports
(directly/indirectly) its information (unique identity, position, heading, velocity, operational status/condition, and any nearby hazard/obstacle detection) and
significant changes of information of all IVHS vehicles within its regional area to the central monitoring hub. Assume that the central monitoring hub links only to
mobile hub nodes.• An average of 500,000 passenger vehicles (ranging from motorcycles up to 6-passenger vans, including Sport Utility Vehicles and pickup trucks). (Assume a
uniform statistical distribution of passenger vehicles within the 25km-by-25km IVHS operational area.) Each passenger vehicle can communicate with any mobile hub node
within that mobile hub node’s ½ km by ½ km square regional area or other IVHS vehicle (passenger, transport, etc.) within a 10 meter by 10 meter square local area from
the center of the vehicle to constantly report its information (unique identity, position, heading, velocity, operational status/condition, and any nearby
hazard/obstacle detection) to all mobile hub nodes in regional range (direct contact 99% of the time, for the remaining 1% of the time one nearby passenger vehicle is
used to relay such information.) Each passenger vehicle also receives (directly or indirectly) the same information about all other vehicles within its local area
(plus road and ecosystem conditions in its local area). Each passenger vehicle may be automated, in which case this information is used by the passenger vehicle’s
driving system; and in all cases (automated driving or manual) such information is displayed to the vehicle’s occupants.• An average of 50,000 other IVHS vehicles (including transport/trucks, buses, etc.) with the same communication characteristics as described above for passenger
vehicles. • An unknown number of obstacles (e.g. pedestrians, animals, road repair signs/equipment; and mobile but non-IVHS-enabled bicycles, non-IVHS-enabled antique
vehicles, legally/illegally parked vehicles, and stationary objects to include inoperable IVHS vehicles) that must be detected, reported, and avoided as obstacles.• Assume that the IVHS system prioritizes vehicular traffic in a simplistic way as follows (lower-priority vehicles must give way to higher-priority vehicles):
Emergency vehicles, then buses, then passenger vehicles, then transport/trucks and others.• Assume that the IVHS highways include sensors for environmental conditions by location (e.g. rain/snow/ice) and provide lane boundary information, automated
traffic signals conditions, entry/exit information, and minimum/maximum speed limits. Such sensor information can be ‘read’ by any IVHS vehicle within that vehicle’s
communication range, and counts as one link for any IVHS vehicle.
a. (12 points) Given the Scenario, identify and describe six (6) different disruptions (in Technology, People, or Processes) that would be expected for any
passenger vehicle in the IVHS system to tolerate during operation. Choose at least one Technology-related disruption and at least one People/Process-related
disruption. Provide at least one paragraph of description for each disruption to:i. describe the disruption, including the general type of disruption and expected characteristic(s) and likely origin(s) (see Homework Set #4 for General Types,
Characteristics, and Origins);ii. briefly explain the consequences if that disruption is not tolerated;iii. briefly explain (at a high level) one way that the disruption could be reasonably tolerated, which may include any combination of IVHS vehicle(s), portions of
or the entire IVHS system, and/or the ecosystem in which the IVHS system operates.
b. (1 point) For any one (1) of the Technical disruptions from (a), provide one paragraph that describes any applicable detection requirements and/or design
requirements that would be expected in the Resilient Architecture Roadmap for the IVHS system.Please provide just a top-level description of the requirements and not formal “shall” statements, nor specific implementation design details. The requirements may
include any combination of IVHS vehicle(s), portions of or the entire IVHS system, and/or the ecosystem in which the IVHS system operates.
c. (3 points) For any one (1) of the People/Process disruptions from part (a), provide three paragraphs that describes the Phase I, and Phase II, and Phase III
requirements that would be expected in the IVHS system.Please provide just a top-level description of the requirements for each of the three phases and not formal “shall” statements, nor specific implementation procedural
details. The requirements may include any combination of IVHS vehicle(s), portions of or the entire IVHS system, and/or the ecosystem in which the IVHS system
operates.
d. (2 points) Given the Scenario, identify and describe one (1) expected (desirable or undesirable) Emergent Behavior of people (or processes or technology) in
the entire IVHS system. Provide at least one paragraph of description for that emergent behavior to include the desirable or undesirable impacts, which may include any
combination of IVHS vehicle(s), portions of or the entire IVHS system, and/or the ecosystem in which the IVHS system operates.
e. (4 points) Given the Scenario, identify and describe at least two (2) System Integrity checks that would be expected for Complex Networked System Integrity
& Trust to assure people’s safety in any IVHS vehicle. Provide at least one paragraph of description for each System Integrity check to:i. briefly explain the consequences if that System Integrity Check is not performed;ii. briefly explain (at a high level) one way that the System Integrity Check could be reasonably accomplished, which may include any combination of IVHS vehicle
(s), portions of or the entire IVHS system, and/or the ecosystem in which the IVHS system operates.
f. (3 points) Given the Scenario, what would be expected for the average number of links for:i. A typical IVHS passenger vehicle (to one decimal place);ii. An IVHS mobile hub node vehicle (to one decimal place);iii. The IVHS central monitoring hub (whole number).
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