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Skycar Transportation Traffic and AirTaxi updated 05/07/02
How Far is that By Air? The
Derivation of an Air-Ground Coefficient added 10/14/01
This is abstract number 51 printed in Oct 2001
Annals of Emergency Medicine
Using 246 ‘Lights and Sirens” ground ambulance transports between 1993 and
1997 (around Fresno California) they derived an equation: Ground miles = 1.3
x air miles with accuracy of 1 mile for distances of up to 40 miles. The more
exact equation was Ground miles = 0.94 + 1.25x air miles.
Airplane crash avoidance systems = TCAS - background added 10/07/01
Transportation - Las Vegas will have a 3.9 mile monorail in 2004 added 08/24/01
Traffic
Congestion in Bangkok - just a picture
www.railway-technology.com/projects/
bangkok/bangkok2.html
added 06/24/01
Costs of
an automobile vehicle mile: added 06/24/01
highest cost is travel time, then vehicle cost, then operating cost.
US city pairs which are potential air taxi markets added 3/01/01
Make Skycar invisible to ATC? It might be both possible and desirable added 2/15/01
Links to General Aviation - NASA's huge list of aircraft and engine manufacturers added 2/15/01
Urban
Mobility in Developing World: {PDF
file 158KBytes} from Transportation Research Part A 1999
added 2/04/01
Average one-way commute in Rio de Janeiro is 107 minutes. (Table 1 includes
about 50 cities)
Average Bangkok car is stationary in traffic for the equivalent of 44 days a
year.
Bangkok loses 35% of its gross city product in congestion.
Transit networks are primarily radial, no permitting cross-town traffic.
Figure 1 shows good correlation between average annual income of top 20% of a
nation and auto ownership.
Only rarely do metro transit systems even pay for daily-cost (pg 683)
Future mobility
Transportation typically takes 1.1 hr and 10-15% of personal budget
added 2/10/01
Airline view of air taxis. Airlines
may be the primary supplier of Skycar air taxi service
added 1/20/01
Seattle Traffic Congestion: 3 freeway sections which have 50% chance of congestions (speeds under 35 MPH) for 5 hours a day. added 1/3/01
Air Traffic Management can be developed at low
cost.
New Zealand ATC upgrade for
trans-ocean flights cost only $4.5 million, whereas the US-FAA similar project
skyrocketed above the initial $140 million estimate. Wall St. Journal Dec
29 added 12/29/00
Skycars reduce traffic congestion (in Puget Sound) without taxes added 12/28/00
Guest Editorial against Light Rail in Seattle Times Dec 22, 2000
Potential Skycar routes added 12/03/00, updated 12/20/00
US Auto Statistics added 11/11/00
Travel
from St. Louis with 140 and 210 mile circles added 12/01/00
Los Angeles - Las Vegas <1 hour added 11/06/00, updated 12/19/00
If fly in air taxi to Renton WA. at 300 MPH,
most commutes would be shorter than 12 minutes
Potential Skycar routes added 12/03/00
An air-taxi skycar will remove about 40 automobiles
from rush hour.
The 'rush hour" now exceeds 2 hours in the US.
I have estimated that a 6 seat air-taxi would carry 3.5 passengers on an average
trip.
An average trip of 6 minutes (30 miles) will require an additional 4 minutes
for load/unload.
Thus an air taxi will have 6 trips per hour, or 12 trips per "rush
hour".
So, a single air taxi will carry an average of 42 passengers (3.5 x12) per "rush
hour".
Since very few commuters now carpool, (only 1.12 passengers per
auto)
each Skycar takes the place of 38 automobiles. added 11/04/00
A Skycar will replace even more since autos since "as a
crow flies' is a shorter distance than the freeway route.
A fleet of 60 air-taxi can eliminate an
entire freeway lane of rush hour traffic
2,240 vehicles/hour on a lane of freeway (at best)
Each air taxi will remove at least 38 autos per hour from a freeway (computed
above)
(actually more since an air taxi will preferentially
remove those autos which travel longer distances)
So a fleet of 59 air-taxi will remove a freeway-lane of traffic (2240/38)
added 11/04/00
View of one 737-600 + 4 nearly invisible M-400s
4 Skycars = 4 lanes of freeway traffic if Skycars were going only 236* miles per
hour
This 4,000' wide view of the sky from 3,000' to 6,000' altitude from about 2 miles away
shows that even this many
Skycars will hardly be visible in the sky. added 11/02/00
* at optimum speed autos pass a fixed point by every 6.22 sec,
so Skycars, with 3.5 passengers should pass by a fixed point
every 19.25 sec = 236 mph
Cartoon: some organizations ignore reality added 11/04/00
Evaluation
of Skycar and its market potential
- by 4 students at Vanderbilt University added
10/24/00
Technology
adoption S curves 
Vtol/Skycar usage
Why Airvan ticket prices will be lower than jet H. Lahore 1995
How
Skycar ticket prices will decrease with time H.
Lahore 1995
Every
56 years we get a new mode of transportation - over the last 200 years!
Same book says
--15% of income is spent on transportation, invariant over time and culture.
--Average car speed had been 30 mph since the model T Ford.
What
features M-600 will need over M400 for Airvan service - by H. Lahore Aug 20, 1999
Skycars
will significantly reduce traffic congestion in Puget Sound
(near Seattle) by 2015
by Henry Lahore August 6, 1999
Detailed
assumptions for 40 mile commute ( e.g. 5,000', $400k/Airvan, 1 minute climb, piloted, etc.)
Puget Sound possible Airvan "park and fly" locations