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Question 1:  What is the state of the art in linear motors?

Answer:  http://www.advancedmotion.net/

 Question 2:  How strong is the Interstate Traveler Rail Conduit Cluster?

Answer:  Fully manufactured from 1" steel plate and tubing, the Interstate Traveler Rail Conduit Cluster has been engineered to support 88,000 of static force when rail cars are at rest.  This value was determined using basic finite element analysis (FEA).  The Commuter Rail Cars have four independent linear motors supporting the weight of the car in much the same fashion as a four wheeled car.  Heavy load vehicles will have six motors (3 / side).  With rail sections spanning 66 feet between stanchion poles, and the cars distributing the weight over multiple independent linear motors, the center point between the rail will not support a concentrated mass.  There is approximately 30 tons of steel per section of rail.  In one mile parallel installation of Interstate Traveler Rail, there is 160 section totaling 4,800 tons of steel per mile of Interstate Traveler Rail for rail sections only.

 Question 3: How much do the vehicles weigh?

Answer: Estimated to be no more than 13,000 lbs but may in fact be increased in size based on engineering recommendations

Question 4:  What kind of vehicles will be able to use the Interstate Traveler Rail?

Answer:  Any kind of vehicle your imagination can provide.  Ambulances are a great idea.

 Question 5:  How much power will they need?

Answer:  Levitation force requirements increase with the mass, yet power consumption is reduced with speed by using inductance.  The cost model for use reflects a cost / lb-mile for car ferries, and a simple cost/mile for pedestrians on commuter car ferries.  Our solar powered hydrogen generation network is planned to generate an excess amount of power, yet in times of exceeding reserve power, we will draw electricity from other commercial supplies.  We also intend to employ a 'graceful' power control system that will balance power consumption over the entire rail, allowing our excess capacity to be sold to the public power grid.

 Question 6: What level of acceleration do you plan to use?

Answer:  The slotted linear motors we intend to employ have the capability of over 100 tons of thrust, and acceleration over 80 meters/second2, however, this kind of power will not be needed except for climbing steep grade.  By using existing suspension systems technology that monitor movement 4 times/second, all accelerations and decelerations will be optimized for the comfort of the passengers and efficiency of energy consumption.  It is likely that the ITC cars will never exceed a G force beyond the comfort of the passengers regardless of maximum acceleration capabilities.

http://www.q3000.com/products-overview.asp

 Question 7: How do the switches work?

Answer: Subnet Switches

 Question 8: How long does it take for the switch to switch?

Answer:   Maybe 2 seconds or less

 Question 9: What headway are you planning between vehicles? (especially important if you're planning to send cars one at a time down the guide way).

Answer:  Headway could be as little as two or three feet, or two or three miles...  Traffic patterns are automatically adjusted based on destination and routing information associated with each car.  If there is a car ready to exit a main line there must be a certain amount of headway for that car to take a switch with out the car behind it running into a half open switch. Bear in mind that all cars are aware of each other, their position and speed on the rail down to the inch.

 Question 10: How fast do the trains go?

Answer:  We expect an average of 180mph for public pedestrian cars (because of frequent stops), and average 220mph for private cars, car ferries and freight, and faster where possible.


Question 11: The bends in Clover Leafs look awfully  sharp...  and I also notice that the track dead ends on the on-ramp.

Answer:  The existing illustration was prepared on 11x17 paper and did not provide enough space to demonstrate a 'Minor Loop' that will act as the buffer for incoming and out going traffic.  The design is intended to have each clover leaf station to utilize a small loop that exists just within the paved road way of the clover leaf ramp.  Some minor loops will be larger than others.  Illustrations are in the works.

 Question 12:  Where do surplus vehicles wait until they are needed?

Answer:  A storage side track.  Bear in mind that we will be making provision for medical evacuation cars and ambulances that will be sitting just off the main line waiting to be called into action.  Also, a traditional roadway ambulance will be able to use a car ferry if necessary and with priority!

 Question 13: What makes this system better than other maglev systems?

Answer:  Small, agile, lightweight, switchable cars that work autonomously like data packets on a data network.  Full TCP/IP automation, solar powered hydrogen production, storage and distribution built-in as the primary power system, with grid shunts to 'give and take' with the national power grid.  Full integration of liquid hydrogen cooled superconductor cables that create the most efficient power distribution network in the world where ever the Interstate Traveler is installed.  The Rail Conduit Cluster provides water, sewer, fiber optics, etc, so we can build a transit station anywhere without having to disturb the existing ecology with installation of terrestrial bound water, sewer, etc...  we bring it all with us.  Our utility substations break down water all day long creating massive stock piles of hydrogen and oxygen, which when recombined, create clean water that will be introduced into the potable water system and electricity that will be consumed by the Interstate Traveler system, the Cloverleaf Stations, lights, heaters, etc... remember, hot water is easy to create when you make the water fresh from hydrogen and oxygen.

 Question 14: Is it faster, cheaper, safer, closer to market, or what?

Answer:  Faster than traditional rail, but not really faster than systems existing maglev systems  Our modular Interstate Traveler Rail Conduit Cluster system is faster to install than any other maglev system.  Because the system is "Plug and Play" the rail can be built from equipment on the rail itself with the Interstate Traveler Rail installation system and 180 degree crain.
Cheaper at 10 million / mile as compared to 20 million / mile.
Safer because it is easier to stop a 13,000 lb car than a 80,000 lb car, and each car isolates passengers from risk as compared to massive multi-car trains that suffer derailments from one car that drags ten other cars down the mountain side with it.  Safer because it is elevated. Closer to Market because it is based on TCP/IP, and matches closely the suggestions of the President's Information Technology Advisory Board for building secure communications systems in the United States.  Closer to market because it creates a growing inter-connectable network modeled after successful data network design methods.  Closer to market because it will support public and private cars that are designed to do all manner of things, from cheap taxis, to corporate limousines, to medical triage, to sports arena pre-game party cars.

 Question 15:  What research has been done to know whether the system could be made to work as described?

Answer:   The IEEE has a small army of brilliant engineers that are a part of the Intelligent Transportation Society. The idea that our system is fully controlled by TCP/IP is describe at out website: http://www.interstatetraveler.us/TCPiPControlsys.htm

Question 16:    When was the Interstate Traveler  Rail Conduit Cluster design, et al., created?

Answer:   Under development for nearly 8 years, the first notes were taken down to paper on Sunday, March 19, 1995, the system was not published  until June 2002.

Question 17:  Is this system to be a transit system, ie with its own cars that people board at stations, or is it one that they drive their own cars on via a specialized 'carrier?'

Answer:  Both  ...see product page

Question 18:  In the drawings this seems to be a 2-rail system supported via a 'Y' with the various infrastructures carried below the base and at the juncture of the Y.  What about having a monorail car - running 2 ways - instead of one car, one way?

Answer:  Our Rail Conduit Cluster technology is designed to be mass produced in a factory in 66 foot sections.  The 'Y' design is for the requisite stability of  'wider' cars.  With a 'Standard Gauge' of 13 feet, the Interstate Traveler Rail could easily transmit cars up to 16 feet wide or wider.  The Central Support is designed to be the housing of the Conduit Cluster itself, as described in the above question.  Two way traffic is achieved with parallel installations of Interstate Traveler Rail.

Question 19:  About the design of a Detroit Loop: Generally loops of this size are created for *road* traffic so that it can go around the city, not through it so the city roads are not clotted with traffic.  It's been my understanding/belief that that's *exactly* the reverse of public transit -bring the people into/out of the city center.  What good is a transit system that takes people around the city when they need to get into it?

Answer:  Upon closer examination of the Detroit Loop diagram, it can be seen that the Detroit Loop is a buffer for traffic entering and exiting the loop from 8 mainline rail pairs bringing traffic into and out of the city from all directions following all the major roads leading into the city.  Although the Detroit Loop may appear to simply be a merry-go-round, it is a fast moving buffer zone absorbing and directing large amounts traffic.  Metropolitan loops such as the Detroit Loop are planned to be setup in concentric loop and spoke topology modeled after SONET rings in Data Network Design.  Minor loops inside of a metropolitan loop will serve as required.

Question 20:  Wouldn't a carrier need to be based on fitting a 'standard' size car? How would the same device carry an Austin Mini and a Humvie?

Answer:  The full sized Car Ferry will provide an enclosure large enough for a full sized Van.  We have several innovative methods to help secure the vehicle in place.


Question 21: Since the loop portion is described as '1-way' wouldn't this be rather time consuming/wasteful?  I don't know the scale of this loop but why should I go all the way around the loop when where I'm interested in going is just 1/4 of the way around the 'other' way?
 

Answer:  The traffic on the loop will be in constant motion using First in First out, with aging for cars entering the loop when destination switches are unavailable.  A loop the size of the Detroit Loop is only about 4 miles long and would only take three or four minutes to circum navigate in light traffic.  Certainly an acceptable time v.s. regular traffic systems.  Just one traffic light for an automobile can last three minutes!

Question 22: Your switch design cannot work as fast as you say. Your "rails" are going to be 12-15 feet apart. Your switch design works by replacing a section of track. That means the replacement track section ( which will weigh a ton or more) must move 13-16 feet in 2 seconds. You would have to use explosives or high pressure air to accomplish this. Not only do you need to overcome the inertia of the track section to start moving, you need to stop it as well. A heavy structural member moving that fast will be difficult to handle, especially without breaking something.

Answer:  The acceleration of an off-the-shelf linear motor easily attains 144 inches/second, or about 12' in one second.  Naturally, careful attention will be given to the design of the switch articulation for both acceleration force and deceleration forces with either direct connections to the linear motors, or via forces optimized with a lever system.    At 30lb/foot for the 12' diameter rail in a triple-junction switch(6 rails on the table ) that is 66 long, the moving switch table could weight as much as 12,000lbs or 6 Tons.  With linear motors easily capable of 100 tons of force, the switches should move easily.  The old saying is... if you had a lever long enough you could move the world, i.e. ten foot lever (10:1) can lift 2000lbs with 200lbs and the same 10:1 lever can increase acceleration by an order of magnitude requiring a greater force, yet not a force so great as is not attainable with existing technology.   Bear in mind also, the switch table rests on magnetic bearings reducing resistance of movement to near zero.

Question 23:   The AMT linear actuators are not designed for supporting the weight of a vehicle. Your proposal supposes that it can do that AND provide propulsion.
Your Maglev suspension system is shown to be symmetrical, with a repulsion mode all around. This design does not take into account that the weight that it supports is from a single direction. (vector) This design may be fine for guiding a vehicle in zero-G, but ignores the force of gravity.

Answer:  The AMT Linear Actuators are given as an example of the motors under development by Interstate Traveler engineers.  The design is proprietary, yet the description is simple:  The location of electromagnetic field axis are planned according performance requirements, and are each adjustable in real-time based on data from solid state gyros and accelerometers.  Not unlike the real-time sensing capabilities of Dean Kamen's Segway.

QUESTION 24:  How is the solar power generated?

Answer:  The Rail Conduit Cluster is designed with a steel Central Support that has top surfaces positioned at 30 degrees from horizontal.   The entire width of the top surface is exactly 8 feet time two when you consider a parallel installation of track to facilitate two-way traffic.  Therefore, we consider a solar panel that is 16 feet wide * 5280 feet equals 84,480 square feet of solar panel per mile of rail.  A rail installation that is 100 miles long would thereby provide 8,448,000 square feet of surface area.  Based on typical solar cell performance of about 10 watts per square foot/hour at peek time, the Rail Conduit Cluster will then be generating 84,480,000 watt-hours at peak time, or ~ 84 Megawatt-hours peak time.   We are talking about 'miles of solar panels' after all. ...   :-)   The power system flow chart can be seen here

Question 27:  Do the vehicles slow down at switches?

Answer:  Yes

Question 27:  How wide are the tracks?

We are planning for two gauges, one at 13 feet, the other at 6 feet. 

Question 28:  How does the suspension work?

Answer:  The slotted linear motors rap around the rail preventing 'roll over' or derailment,  and the suspension at each linear motor is also an electromagnetic actuator that will tilt and pitch the car to keep g-force acceleration perpendicular to the floor during acceleration, deceleration, and banking in turns.  That way your coffee cup will not slide off your table when speeding up, slowing down, or taking turns.  The suspension system is a hybrid Stewart-Platform that allows the ITC Transports to experience controlled flight at high speeds.  Because the levitation gap is directly proportional to the amount of energy required to maintain the gap, the system will always know the exact weight of each car down to the gram and will even be able to reveal the force of the wind acting upon a stationary Transport.

Question 29: Once the switch has moved, how do you lock it in place, and how do you make sure it's in the right position?  if it's half an inch out of line, and you hit it at high speed, most likely bad things happen...

Answer:  The wonderful quality of linear motors is position control.  A typical linear motor can reliably position its self at .002 inches.  In our case, we are only looking to be at the nearest tenth of an inch.

Question 30:   How much time will you have between each car?  How much space will you need between vehicles?  Well, you need to be able to operate the switch, verify that it has moved correctly and locked in to place, and still have enough time to stop the following vehicle if the switch has malfunctioned.

Answer: The head way time is determined in real-time based on traffic analysis.  The idea that 2 second head way is possible, does not mean that it is practical.   In reality, a mile of track could hold 176 cars (30 feet each car) end to end, a 100 mile installation could hold 17,600 cars end to end, but that would not be practical either.  If you kept 30 feet between each car, you could have 8800 cars on the rail, but that could make lead times too close, and then if you halve it again, you may be getting closer to a practical maximum of cars on a system without the worry of having to slow down traffic for switch operation. 

Question 31: How will the Maglev cars apply the brakes when needed?

Answer:  We are planning for three forms of braking, 1) normal positioning controls,  2)cut power with frictional stop, and 3) full power stop reversing levitation polarity to 'grab' the rail.  Other methods are still under consideration.

Question 32:  How many people will the Interstate Traveler be able to move in one day?

Answer:  The Passenger Cars are planned to be 40 seaters.  40 people at 200lbs is 8000lbs leaving up to 5000lbs for the GVW of the car.  We have mathematical models that suggest a 100 mile system connecting two major cities with 100 terminals to load and unload passengers (two every 2 miles for bi-directional travel), with 400 cars at 50% capacity, with ridership traveling an average of 20 miles at an average speed of 180 mph, we will be able to provide 1.7 million trips per day.  It is a basic mathematical model, reality will certainly provide something slightly different.

Question 33:  I didn't mean to put your system in the whacko column, but I do feel that there is so much new technology or, if you prefer, so many technologies piled one on top of another that the system has little near term chance. One example is the need for interactivity with existing power grid.  Seems like many years before such interaction will be sufficiently reliable for system of this type, or will add on some extra technology to cover the problem.
 

Answer:  There are actually only a few kinds of technology included in the system.   Actually there are less things going on within the inner workings of the Interstate Traveler than is happening in your average home.  Be it plumbing, electrical, or data lines, there is not that much going on so as to be 'too much'.   The Electrical system is far less complicated than it seems to appear.  Interactivity with existing power grids is actually commonplace, and you can even buy a system for your home so that the solar panels on your roof can make your voltage meter spin backwards, if your house and appliances are not consuming all the energy.  Click here to learn more about inverters.  Solar panels are very simple in nature, Maglev rail technology is proven many times over, linear motor positioning controls are at a high level of development, TCP/IP addressing schemes have already been adapted to control mechanical processes, machines, machine components, and sensors on those machines.    The Intestate Traveler is simple.

Question 34: According to Peter Drucker, an oft made mistake in a paradigm shifting system is to over engineer it and put in too many bells and whistles, rather doing a basic job of demonstrating the most fundamental aspects of the paradigm shift. In other word you have to walk before you run.  The solar and hydrogen aspects might be useful farther down the line, but at this stage they just postpone implementation. In the meantime some else will be well into production.

Answer:  As in Question 33, the systems planned for this integration are quite simple, and available.  My question is:   "How can a paradigm shift happen if you remain with the status quo?"  The Solar and Hydrogen aspects are useful now, and according to the US DOE, and the climate change in the fossil fuel market, and the drive toward clean systems, it would be short sighted to invest a fortune into a system that is not fully compliant with long range energy policy.   As for the basic job of demonstrating the paradigm shift.  It has already been demonstrated, the Interstate Traveler is an optimization of the 'Basic' system.  We are not recreating the wheel, we are getting rid of it.

Question 35:  The basic shift your system represents is the small vehicles (relative to most train concepts) and off-line stations, and possibly the circular beams. I'd say stick with that, the power source is secondary. As I understand it the state of the art of solar/hydrogen is more expensive than conventional power.

Answer:  According to national statistics for our growing nation, if the power companies built one conventional natural gas burning power plant every week, we will still not keep up with the demand.  The state of the art is in 'Distributed Energy Generation'.  Click here to see a slide show from DTE Energy on their effort to be a national leader in DEG systems.  So to fully integrate a distributed energy generation system will be a valuable asset in its own right, and is practically necessary as most power grids are already near capacity.   We don't want to add to that problem or be short sheeted and shut down because of a power failure some place else.  It is in our national interest to have a highly redundant DEG system to serve our growing nation, and we are doing our part to help.  Power redundancy is a safe guard against failure.  Why under-engineer something of this magnitude, when you have the chance to build in robust systems that are independent operation, it should be done.  It would be fool hardy not to do it.  It would be like jumping out of an airplane with just one parachute; with a conscious choice to leave your reserve parachute back at the hanger where it will not be able to help you if you need it.

Question 36:  How soon do estimate you can get to market?

Answer:  We estimate 12 months to tool up, and estimate rail production at 8 kilometers per week, in general terms.

Question 37:  How big does it have to be for a positive ROI?

Answer:  We have proposed systems as short as 20 miles, and those systems have fewer cars, and fewer stations, to the price is less. 

Question 38:  All the other maglev concepts have flat magnetic surfaces. What is the advantage of the circular design?

Answer:  The Rail Conduit Cluster is designed to be constructed from mass produced steel tubing and steel plates.  For the purpose of simplicity, balance, and durability we have made every effort to simplify the design and environmental exposure.  There are also structural benefits to the use of steel tubing.

Question 39: In your Rail and Conduit section you speak of "84,480,000 watts pr hour at peek times."  You make a similar claim in Question 24.  I grant  you that the misspelling of peak is a minor matter, but your apparent lack of  understanding of power units illustrates (at least to this observer) that you are not particularly well grounded  in the basics.  That is unless you really
 mean joules/sec/hour in which case you might be talking something akin to energy acceleration.  THAT would be exciting.

Answer:  You seem disappointed with the lack of perfected scientific data.  Just about every large engineering project begins with a picture in someone's mind.  People have visualized building great dams, and have been successful, even thought the tools necessary to build the dam had to be designed and built before construction could begin.  The auto companies do all of this for every car...  they show what it will look like and imply the engineering is possible, then they proceed to get to work engineering every last detail.  For the Interstate Traveler, there is a considerable amount of engineering that needs to be done, and we rest comfortably in knowing that all the components have already been proven in their own right.  We rest assured that the state of the art in computer aided design can allow a company like Boeing to design and build an airplane as modern and complex as the 777, knowing that anything they need to build the plane would have to be designed and built and that their Kinematic Finite Element Analysis tools will very accurately foretell exact how that air plane would fly.  The integration of the Interstate Traveler Rail Conduit Cluster is not anywhere near as complicated as a 777, our plan is simple and it is a good idea to do exactly as we plan.  As for my calculations, I have only attempted to use basic arithmetic to show that one solar cell that generates 120w/hour can be hooked together with one hundred more identical solar cells and that the collection of 100 solar panels would in turn produce 12,000w/hour created 120 watts at a time for each of the 100 panels, and it stands to reason that the larger the surface area involved, the more sunlight will be collected. I am doing my best to keep the description of the system simple, full well knowing that the several engineering companies already collaborating on the project will be able to create a more exact scientific description.  I am not sure what you mean about energy acceleration, but it sounds cool.  Feel free to explain to me how my math is incorrect, if you have the time, otherwise we are still counting on our engineer partners to get more exacting with the numbers as we move forward.

Question 40:   In Question 6 you talk about applying 100 tons of thrust on a 13,000 lb vehicle.  Are you serious about that.  Also, you indicate an acceleration of  80 ft/sec.  These  are units of velocity, not acceleration.  If you can't the units straight, how can we believe you have anything else straight.  In  fact, you  give precious little information about how this all really  works.  If I were of a suspicious nature, I would suspect that you took all the OK things of the day,  and then simply proclaimed loudly that this is my  new system.  SEND MONEY.

Answer:  If you look at all the systems as plumbing you will see just how simple the project is.  As the Interstate Traveler is built, there will be switches, valves, compressors, linear motors, flow meters, tanks, steel plates, solar panels, electrolysis tanks, conduit for insulated high temperature super conductor wire, conduit for water, sewer, vapor based hydrogen and oxygen, fiber optic lines, and all the stuff that goes into building the clover leaf stations and the car ramps, and the Rail Conduit Cluster itself.   Even as you have not asked me for more information, I will share this with you.  Yes, I did look around me, and studied about all the systems that have been published, I took into account the need to serve the automobile as well as pedestrians, that you need to be environmentally clean, I looked at the future of hydrogen, and considered the use of hydrogen fuel cells to power the Interstate Traveler system, and also looked around me and could easily see that the existing power grids are at or near capacity, we attended meetings and listened to the top directors of the energy companies and automotive companies explain that hydrogen power is the future for all the right reasons, and that the auto industry needs a hydrogen distribution network, and that they need to build cars to stay in business and we shared with them the opportunity to build the maglev cars on for the Interstate Traveler, they talked about how all the automotive companies are moving toward hydrogen.   So the answer is Yes, I did look all around me, and I did my best to integrate the very best of every form of technology I could find, and as a designer, I looked at all the technology I have planned for and designed into the system and proudly say: this is my new system.   From that point forward I have reached out to everyone I could to share the knowledge of my new system, and I have been very fortunate to have come to know many brilliant people in my life, and many of them have joined with me to see the fruition of the Interstate Traveler Project.  Together, WE are a solution provider, and the purpose of the Interstate Traveler Project is to integrate all the best technology we can to solve the problems of mass transit and the production and distribution of hydrogen, and to enjoy the obvious benefit of laminating every last square foot of the ITC rail with the best solar cells in the world.  With all that said, even if the aforementioned mentioned was not organized perfectly, We hereby propose The Interstate Traveler Project as a solution using the best technology available, and we are proud to work together on this... so I ask you.... Would you care to join with us in our effort?
 

Question 41:  Between cities, I think a very-high-speed system with 40+ passenger vehicles  could make a lot of sense, but it doesn't work as well within the city,  since it's going to take ten or twenty miles for your vehicle to get up to  200mph every time it has to stop; if everybody going from Detroit to Denver  gets off at one station, they'll be very happy to have gone 200mph between  the two cities; if, however, you've got 40 stations in Denver, then, in  general, everybody on that 40-person vehicle is going to want to get off at  a different place, and you're either going to make them transfer or have to stop a whole bunch of different places to let everybody off. Personally, I have been more focused on the in-city transportation market,  rather than inter-city, where the problems are somewhat different.

Answer:  Yes, the designs you have seen are specifically for interurban/intercity transit, yet bear in mind that the same system is designed in two separate standard gauges.  The Interstate Traveler has a standard gauge of 13 feet, the Intercity Traveler has a standard gauge six feet.  The Intercity Traveler is about the same size as the Taxi2000, but is fully compliant with the same routing protocols and conduit cluster of the 13 foot system.  It is a part of our effort to create a unified public transit system.  As for acceleration, our calculations are still under construction. Could you explain your reasoning to assume it will take 10 or 20 miles to accelerate up to 200 mph?  With linear motors capable of acceleration at 12feet/second, perhaps it would be less than you suggest, also the difference of 10 and 20 miles required to achieve 200 mph is quite large when looking at an acceleration curve.   As for the types of cars on the system and their uses, there will certainly be 40 passenger pubic cars, but our standard gauge allows for cars of all types, with public and private ownership.  Municipal, commercial, or personal, there will be cars of all types.  If it is desired to pay the cheapest possible rate, you will stop at every stop like a Grey Hound Bus, If you pay a premium, you will be able to by pass all the stops.  There will be regular express cars to certain locations.  There will be cars as big as a grey hound bus and bigger, there will be cars as small as a typical four door automobile, and there will be emergency vehicles and service vehicles, and there will be commercial fright vehicles and corporate limousines, and entertainment venues can operate their own cars to go out into the suburbs to pick up ticket holders as a service included in the price of their ticket.  Imagine a car full of sports fans surrounded by like minded people excited to be on their way to see the game in a car decked out with team oriented decorations!

Question 42:  Why are you not using any wheels?

When comparing the structural differences between  rail  designed to guide wheeled vehicles and the Interstate Traveler Rail Conduit Cluster, it can be seen that the Interstate Traveler Rail is smooth and does not have any surface areas to accumulate debris, there are no moving mechanical parts other than the occasional switch, and since it is made from Tube steel and Steel Plates, the construction is cheaper and easier to automate production with strait line welds.  Perhaps your ultimate design will not include the complicated ladder work of steel tubing to form the structural spanning strength of the Taxi2000 guide way internal truss rail, it would appear to be very labor intensive to build the guide way internal truss.

Question 43:  Inside a city, I think small vehicles work a lot better, since people want to go off in different directions, and high speeds aren't so important; with small vehicles, you need very short headways if you're going to move enough people; to get the short headways you need to have a switching system where the moving parts are on the vehicle, not the guide way. 

Answer:  The Interstate Traveler has a half sized model that uses a standard gauge of 6' feet instead of the full size 13' gauge.  The half size gauge will work very well in the inner city environment.
 

 

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