the future of automated transit technology and its...
TRANSCRIPT
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by
Alain L. Kornhauser, PhDProfessor, Operations Research & Financial Engineering
Director, Program in TransportationFaculty Chair, PAVE (Princeton Autonomous Vehicle Engineering)
Princeton University
Board Chair, Advanced TRansit Association
Presented at
94th Annual MeetingTransportation Research Board
Washington, DCJan. 14, 2015
The Future of Automated Transit Technology
and Its Positive Impact on Transit Operations
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Levels of Automation1 2 3 4 5
Excl
usi
vity
of
the
Way
Exclusive
Mixed
Restricted
Scope of Vehicle Automation
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Levels of Automation1 2 3 4 5
Excl
usi
vity
of
the
Way
Exclusive
Mixed
Restricted
Scope of Vehicle Automation aTaxi
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The Business Case
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Terrible News! Claims are going through the roof!
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2011 Nationwide Bus Casualty and Liability Expense
Source FTA NTD
Casualty and Liability Amount
Vehicle-related
$483,076,010.
Total Buses 59,871
Sub-Total Casualty and Liability Amount Per Bus
$8,069/Bus/Year
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Key Business Model
Cost of Active Collision Avoidance<
Present Value {Expected Liability Savings over life of bus}
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Liability Savings pay Cash for the Technology, and…
“half” of the following come for FREE!
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Think About…
+
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Think About…
+ +
Enormous Extended Reach
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Think About…
+
Inexpensive Guideway + Inexpensive vehicles
Great way to get started
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Think About…
+ +
Enormous Extended Reach
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• By walking to a station/aTaxiStand– At what point does a walk distance make the aTaxi
trip unattractive relative to one’s personal car?
– ¼ mile ( 5 minute) max
• Like using an Elevator!
“NJ Transit aTaxis” Service Model
Elevator
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• By walking to a station/aTaxiStand– A what point does a walk distance makes the aTaxi
trip unattractive relative to one’s personal car?
– ¼ mile ( 5 minute) max
• By using the rail system for some trips– Trips with at least one trip-end within a short walk
to a train station.
– Trips to/from NYC or PHL
Spatial Aggregation
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• By walking to a station/aTaxiStand– A what point does a walk distance makes the aTaxi
trip unattractive relative to one’s personal car?
– ¼ mile ( 5 minute) max
• By using the rail system for some trips– Trips with at least one trip end within a short walk
to a train station.
– Trips to/from NYC or PHL
• By sharing rides with others that are basically going in my direction– No trip has more than 20% circuity added to its trip
time.
Spatial Aggregation
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Pixelation of New Jersey
NJ State GridZoomed-In Grid of Mercer
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Stands are conveniently located about ½ mile appart
xPixel = floor{108.907 * (longitude + 75.6)}yPixel = floor{138.2 * (latitude – 38.9))
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O
O
DP1
An aTaxiTrip
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P1
O
Common Destination (CD)CD=1p: Pixel -> Pixel (p->p) Ride-sharing
TripMiles = LTripMiles = 2LTripMiles = 3L
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P1
O
PersonMiles = 3LPersonMiles = 3LaTaxiMiles = LAVO = PersonMiles/aTaxiMiles = 3
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NJ Transit Train Station
“Consumer-shed”
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D
a PersonTrip from NYC (or PHL or any Pixel containing a Train station)
NYC
O
Princeton Train StationaTaxiTrip
An aTaxiTrip {oYpixel, oXpixel, TrainArrivalTime, dYpixel, dXpixel, Exected: dTime}
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P2
P1
O
CD= 2p: Pixel ->2Pixels Ride-sharing
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P1
P3
OP2
CD= 3p: Pixel ->3Pixels Ride-sharing; P2 New
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Elevator Analogy of an aTaxi StandTemporal Aggregation
Departure Delay: DD = 300 Seconds
KornhauserObrien
Johnson40 sec
HendersonLin
1:34
Popkin3:47
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Samuels
4:50
HendersonLin
Young0:34
Popkin2:17
Elevator Analogy of an aTaxi Stand60 seconds later
ChristieMaddow
4:12
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“Last Mile” Impact on NJ Transit Rail
(Today: 281,576, +537% ! )
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Typical Daily NJ-wide AVOCD: Common Destinations; DD: Departure Delay (in Seconds)
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Typical Daily NJ-wide AVOCD: Common Destinations; DD: Departure Delay (in Seconds)
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Typical Daily NJ-wide AVOCD: Common Destinations; DD: Departure Delay (in Seconds)
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Typical Daily NJ-wide AVOCD: Common Destinations; DD: Departure Delay (in Seconds)
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Typical Daily NJ-wide AVOCD: Common Destinations; DD: Departure Delay (in Seconds)
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Typical Daily NJ-wide AVOCD: Common Destinations; DD: Departure Delay (in Seconds)
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Mercer County Pixel {200,103} Princeton
Item Value
Activity Locations
57
Employment 1,336
Population 1,062
School Enrollment
0
Work
School
Home(Block Centroid)
Pixel Centroid
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2-pax aTaxis
15-pax aTaxis
6-pax aTaxis
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What about the whole country?
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Public Schools in the US
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Nation-Wide Businesses
Rank StateSales
Volume No. Businesses
1 California $1,889 1,579,342
2 Texas $2,115 999,331
3 Florida $1,702 895,586
4 New York $1,822 837,773
5 Pennsylvania $2,134 550,678
9 New Jersey $1,919 428,596
45 Washington DC $1,317 49,488
47 Rhode Island $1,814 46,503
48 North Dakota $1,978 44,518
49 Delaware $2,108 41,296
50 Vermont $1,554 39,230
51 Wyoming $1,679 35,881
13.6 Million Businesses{Name, address, Sales, #employees}
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US_PersonTrip file will have..
• 308,745,538 records
– One for each person in US_Resident file
• Specifying 1,009,332,835 Daily Person Trips
– Each characterized by a precise
• {oLat, oLon, oTime, dLat, dLon, Est_dTime}
• Will Perform Nationwide aTaxi AVO analysis
• Results ????
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Manhattan (New York County)
• Simulated population of 1,585,873 residents
• 8,085,055 trips originate within Manhattan
• 52,759,156 person-trip miles for Manhattan oTrips
• 3,010,666 unique travelers (1,424,793 non-resident travelers – Commuters)
• Mean Trip Length = 6.53 miles; Median Trip Length = 3.31 miles
• Interesting differences between commuter and resident population traveling through Manhattan
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Trip Files are Available If You want to Play