TECHNICAL FIELD OF THE INVENTION
[0001] The present invention relates to a rail vehicle provided with a driving cabin for
driving the vehicle in two opposite directions.
BACKGROUND ART
[0002] Most conventional multi-car track-bound vehicles as well as bidirectional locomotives
are equipped with two driving cabins, one at each end of the vehicle. Only one driving
cabin is used when the vehicle is running, which means that at all times, one of the
two driving cabins is not used, which amounts to a loss of room and weight.
[0003] It has been suggested in
EP0695253 to arrange a control desk for driving the vehicle somewhere on the rail vehicle,
e.g. in a mid-section of a carriage offset from the front part of the vehicle or train,
i.e. without windshield or direct visibility towards the direction of travel. The
control desk is provided with a plurality of screens, which display general and detailed
views of the track in front of the vehicle. The vehicle is provided with a plurality
of video units which may be pivotable or not, and have a variable or fixed focal length,
to generate the information available on the screens. While the vehicle could theoretically
run in both directions from the control desk, there is a risk of confusion for the
driver when the vehicle runs in the direction opposite the direction in which the
driver is sitting, e.g. when pushing the driving joystick forward and feeling an acceleration
in opposite direction. Hence, there is a risk of faulty actions, which could cause
an accident.
[0004] DE 94 07 964 U discloses a locomotive provided with a first end facing a first direction, a second
end facing a second, opposite, direction, and a driving cabin located in a midsection
of the locomotive offset from the ends of the locomotive and raised above the ends
of the locomotive. The driving cabin comprises a visual display screen assembly for
displaying real time images of the track taken by a first video unit from the first
end of the vehicle towards the first direction and by a second video unit from the
second end of the vehicle towards the second direction. The driving cabin further
comprises a sitting assembly for sitting the driver in a first sitting position towards
the first direction in front of the visual display assembly, and for sitting the driver
in a second sitting position towards the second direction in front of the visual display
assembly, and a control desk assembly for driving the track-bound vehicle in the first
direction from the first sitting position, and for driving the track-bound vehicle
in the second direction from the second sitting position. The driving cabin is also
provided with a first and second windscreens giving direct visibility in the first
and second direction. The video units and visual display assembly provide additional
visual information to the driver in regions that are not directly visible through
the windscreens and are used during manoeuvres at low speed.
SUMMARY OF THE INVENTION
[0005] The invention aims at avoiding confusion of the driver of a track-bound vehicle provided
with a driving cabin for driving the vehicle in two opposite directions.
[0006] According to the invention, there is provided a track-bound single-car or multi-car
transportation vehicle as defined in claim 1.
[0007] Hence, the driver can always be seated in the direction facing the travel direction
of the vehicle, so that there is no contradiction between the vestibular sense of
the driver and his or her sitting position.
[0008] According to a preferred embodiment, the control desk assembly includes a first control
desk for driving the track-bound vehicle in the first direction from the first sitting
position, and a second control desk for driving the track-bound vehicle in the second
direction from the second sitting position. Hence, each control desk can be dedicated
to one direction of travel. If required, the control desk assembly may include means
for inhibiting use of the second control desk when the vehicle is driving in the first
direction and for inhibiting use of the first control desk when the vehicle is driving
in the second direction. The first control desk and the second control desk are preferably
identical.
[0009] Alternatively, the control desk assembly may include a single, rotatable control
desk assembly, which can be moved between a first desk position for driving the track-bound
vehicle in the first direction from the first sitting position, and a second desk
position for driving the track-bound vehicle in the second direction from the second
sitting position. This arrangement is even more economical and saves additional space.
[0010] According to a preferred embodiment, the visual display screen assembly is linked
to at least a first video unit for continuously acquiring images of the track towards
the first direction.
[0011] Preferably, the visual display screen assembly is linked to at least a second video
unit for continuously acquiring images of the track towards the second direction.
Preferably, a plurality of video units is provided for each direction to ensure redundancy.
The video units may be placed at the corresponding end of the vehicle and/or on the
track itself.
[0012] According to the invention, the visual display screen assembly may include a first
visual display screen assembly for displaying real time images of the track taken
from the first end of the vehicle towards the first direction to a driver sitting
in the first sitting position and looking in the first direction, and a second visual
display screen assembly for displaying real time images of the track taken from the
second end of the vehicle towards the second direction to a driver sitting in the
second sitting position and looking in the second direction.
[0013] In order to avoid any mistake from the driver, the visual display screen assembly
may include inhibiting means for inhibiting display of real time images of the track
from the first end of the vehicle towards the first direction to a driver sitting
in the first sitting position and looking in the first direction when the vehicle
is driving in the second direction, and for inhibiting display of real time images
of the track from the second end of the vehicle towards the second direction to a
driver sitting in the second sitting position and looking in the second direction,
when the vehicle is driving in the first direction.
[0014] The sitting assembly may comprise a first seat for sitting in the first sitting position
and a second seat for sitting in the second position.
[0015] Alternatively, the sitting assembly may comprise a rotatable seat for sitting in
the first sitting position and in the second sitting position. This rotatable seat
can be associated with a rotatable control desk assembly and/or a rotatable visual
display screen assembly. In particular, the rotatable seat, rotatable control desk
and/or rotatable visual display screen assembly can be fixed to a common rotatable
platform. In this context, "rotatable" means any type of rotation or combination of
rotation and translation, which allow the rotatable elements to move from the first
position towards the first direction to the second, opposite, position.
[0016] Advantageously, at least some of the input and output signals to and from the driving
cabin can be stored on an on-board signal recorder, e.g. the real time images displayed
by the visual display assembly as well as signals from the video units, control desk
and/or seat actuator or from a seat position sensor for detecting the first and second
positions of the seat. The on-board signal recorder may be placed in the driving cabin
or elsewhere on the vehicle for the purpose of facilitating the investigation of an
accident or incident. For this reason, the recorder can be protected so as to withstand
conditions likely to be encountered in a severe accident, in particular acceleration
above 500 g and temperatures of over 1000 °C.
[0017] According to a preferred embodiment, it is possible to locate the driving cabin according
to the mass repartition of the car body or of the train. The fact that the driving
cabin is spaced apart from the front and rear ends of the vehicle also increases the
safety for the driver in the event of a collision. Most track-bound vehicles are provided
with crush zones, in particular at the ends of the vehicle, adapted to deform and
absorb kinetic energy during an impact with an obstacle on the track. The driving
cabin is preferably spaced apart from such deformable zones of the car body and located
in a reinforced, non-deformable part of the vehicle.
BRÈVE DESCRIPTION DES FIGURES
[0018] Other advantages and features of the invention will then become more clearly apparent
from the following description of a specific embodiment of the invention given as
non-restrictive examples only and represented in the accompanying drawings in which:
- figure 1 is a diagrammatic illustration of a vehicle according to a first embodiment
of the invention;
- figure 2 illustrates a vehicle according to a second embodiment of the invention;
- figures 3A, 3B and 3C illustrate a driving cabin of the vehicle of figure 2;
- figures 4A, 4B and 4C illustrate a variant of the driving cabin of figure 2.
[0019] Throughout the description and drawings, identical reference numbers will be used
to indicate identical or similar elements of the various embodiments.
DETAILED DESCRIPTION OF A PREFERED EMBODIMENT
[0020] With reference to Figure 1, single-car or multi-car track-bound transportation vehicle
10 has a first end 12A facing a first direction 14A, a second end 12B facing a second,
opposite, direction 14B. The vehicle is powered by motors or engines to run in both
directions.
[0021] First, resp. second sets of video units 16A, 16B, are provided at the first, resp.
second end 12A, 12B of the vehicle for the acquisition of continuous images of the
track towards the first, resp. second direction 14A, 14B.
[0022] The vehicle is provided with a driving cabin 18, which can be located anywhere on
the vehicle, and preferably offset from the front and rear ends 12A, 12B of the vehicle.
[0023] The driving cabin 18 is provided a single, rotating driver's seat 20 which can be
moved between a first sitting position towards the first end 12A and the first direction
14A, and a second, opposite, sitting position towards the second end 12B and the second
direction 14B. The driving cabin 18 is further provided with a control desk assembly
22 including a first control desk 22A used in the first sitting position for driving
the track-bound vehicle 10 in the first direction 14A and a second control desk 22B
used in the second position for driving the track-bound vehicle 10 in the second direction
14B. The driver's seat 20 and the control desk 22A, 22B can be rotated automatically
or manually. For a manual rotation the driver can be given an instruction to rotate
the seat by means of visual information (lamp, screen, etc.) and /or by means of audible
information (buzzer, etc.) until the seat and control desk face the direction of travel.
[0024] The driving cabin is further provided with a visual display screen assembly 24 including
a first, resp. second visual display screen 24A, 24B, located on the first, resp.
second control desk 22A, 22 and connected to the first, resp. second set of video
units 16A, 16B for displaying real time images of the track in the direction the driver
is facing.
[0025] To avoid any error, the control desk 22A, 22B opposite to the direction of travel,
is deactivated by an inhibiting means (not shown). Alternatively, only the visual
display screen 24A, 24B opposite to the direction of travel can be deactivated.
[0026] The second embodiment illustrated in Figure 2 and 3 differs from the embodiment of
Figure 1 in the particular, more compact, design of the driving cabin 20, which includes
a single control desk 22 that pivots together with the driver's seat 20. The control
desk 22 is equipped with one or more visual display screens 24, which are connected
to the video units 16A, 16B at the front and rear ends of the vehicle.
[0027] In order to avoid any disturbance of the driver, the screen 24 can only display images
in the direction in which the driver is sitting. Accordingly, when the driver is sitting
in the first sitting position of Figure 3A, the screen 24 displays images from the
video units 16A located at the first end 12A of the vehicle, while in the second sitting
position of Figure 3C, the screen 24 displays images taken from the second end 12B
of the vehicle. In the intermediate position of Figure 3C, it may be decided that
no image are available or that a choice can be made between the display directions.
For safety reasons controls and commands are disabled in the intermediate position.
The seat 20 and the control desk 22 can be driven by the same actuator (motor, pneumatic
cylinder or any kind of mechanical system allowing a final rotation) or have different
actuators. A common actuator is simpler than separate actuators, which require synchronization.
[0028] If more than one visual display screen 24 are used, e.g. a main display screen directly
in front of the seat and a rear-view screen directly next to the main screen, the
two screens are automatically linked to the video units at the corresponding end of
the vehicle, depending on position of the seat 20 and control desk 22.
[0029] In the variant of figures 4A to 4C, the driving cabin 18 is equipped with a rotating
seat 20 provided with a control desk assembly 22 comprising two side control panels
22.1, 22.2 directly adjacent to the arm rests of the seat 20. This configuration offers
a better access to the seat 20. The side control panels 22.1, 22.2 may comprise a
joystick-type drive-by-wire control member, e.g. as disclosed in
EP1400426, or any type of control members that allow control of the essential driving functions
of the vehicle, including at least drive power and braking of the vehicle. The side
control panels 22.1, 22.2 do not include the visual display screens 24A, 24B, which
are stationary and placed on two end walls 12A, 12B of the driving cabin 18. As previously
discussed in connection with the first embodiment, one visual display screen 24A or
set of screens is visible from the seat 20 in the first sitting position of Fig. 4A
and displays the images from the video units 16A at the first end 12A of the vehicle,
while the other visual display screen or set of screens 24B is dedicated to the other
direction 14B. If there is not sufficient space for all visual displays 24A, 24B on
the control desk 22 some buttons or visual displays 24A, 24B can be fixed on the walls
of the driving cabin 18.
[0030] While the above examples illustrate preferred embodiments of the present invention
it is noted that various other arrangements of the driving cabin 18 and vehicle 10
may also be considered, which fall within the scope of the appended claims.
[0031] The visual display screen can be linked to video units distributed at regular interval
along the track, in the direction of travel.
[0032] The vehicle cabin can be provided with an external and/or internal door. It can also
be provided with a side window, which can provide additional direct information on
the direction of travel.
[0033] A second set of display screens can be included for a second driver.
[0034] To reach a good safety level, some components, in particular the video units 16A,
16B and links between video units 16A, 16B and screens 24A, 24B are duplicated. A
wireless connection between the video units 16A, 16B and screens 24A, 24B is also
contemplated.
[0035] The vehicle cabin described above can be integrated to any kind of track-bound single-car
or multi-car bidirectional transportation vehicle, including locomotives and locomotive-hauled
trains, railcars or single powered coaches or articulated vehicles with distributed
motive power.
1. A track-bound single-car or multi-car transportation vehicle (10) provided with a
first end (12A) facing a first direction (14A), a second end (12B) facing a second,
opposite, direction (14B), and a driving cabin (18) located in a midsection of the
vehicle offset from the first and second ends (12A, 12B) for driving the vehicle (10)
in the first and second directions, wherein the driving cabin is without windshield
and without direct visibility towards the direction of travel and comprises: a visual
display screen assembly (24) for displaying real time images of the track at least
from the first end (12A) of the vehicle towards the first direction (14A)
characterised in that the driving cabin further comprises:
- a sitting assembly (20) for sitting the driver in a first sitting position towards
the first direction (14A), and for sitting the driver in a second sitting position
towards the second direction (14B), wherein the visual display screen assembly (24)
includes a first visual display screen (24A) for displaying real time images of the
track taken from the first end of the vehicle towards the first direction to a driver
sitting in the first sitting position and looking in the first direction, and a second
visual display screen (24B) for displaying real time images of the track taken from
the second end of the vehicle towards the second direction to a driver sitting in
the second sitting position and looking in the second direction; and
- a control desk assembly (22) for driving the track-bound vehicle in the first direction
(14A) from the first sitting position, and for driving the track-bound vehicle in
the second direction (14B) from the second sitting position, wherein the one of the
first and second visual display screens (24A, 24B) opposite to the direction of travel
can be deactivated.
2. The track-bound vehicle of claim 1, wherein the control desk assembly (22) includes
a first control desk (22A) for driving the track-bound vehicle in the first direction
from the first sitting position, and a second control desk (22B) for driving the track-bound
vehicle in the second direction from the second sitting position.
3. The track-bound vehicle of claim 2, wherein the control desk assembly (22) includes
means for inhibiting use of the second control desk (22B) when the vehicle is driving
in the first direction and for inhibiting use of the first control desk (22A) when
the vehicle is driving in the second direction.
4. The track-bound vehicle of claim 2 or claim 3, wherein the first control desk (22A)
and the second control desk (22B) are identical.
5. The track-bound vehicle of claim 1, wherein the control desk assembly includes a rotatable
control desk assembly (22), which can be moved between a first desk position for driving
the track-bound vehicle in the first direction from the first sitting position, and
a second desk position for driving the track-bound vehicle in the second direction
from the second sitting position.
6. The track-bound vehicle of any one of the foregoing claims, wherein the visual display
screen assembly is linked to at least a first video unit (16A) for continuously acquiring
images of the track towards the first, resp. second direction (14A).
7. The track-bound vehicle of claim 6, wherein the visual display screen assembly is
linked to at least a second video unit (16B) for continuously acquiring images of
the track towards the second direction (14B).
8. The track-bound vehicle of any one of the foregoing claims, wherein the visual display
screen assembly (24) includes inhibiting means for inhibiting display of real time
images of the track from the first end of the vehicle towards the first direction
to a driver sitting in the first sitting position and looking in the first direction
when the vehicle is driving in the second direction, and for inhibiting display of
real time images of the track from the second end of the vehicle towards the second
direction to a driver sitting in the second sitting position and looking in the second
direction, when the vehicle is driving in the first direction.
9. The track-bound vehicle of any one of the foregoing claims, wherein the sitting assembly
(20) comprises a rotatable seat for sitting in the first sitting position and in the
second sitting position.
10. The track-bound vehicle of claims 5 and 9, wherein the rotatable control desk assembly
rotates with the rotatable seat.
1. Schienengebundenes Einzelwagen- oder Mehrwagen-Transportfahrzeug (10) ausgestattet
mit einem ersten Ende (12A), das in eine erste Richtung (14A) zeigt, einem zweiten
Ende (12B), das in eine zweite, entgegengesetzte Richtung (14B) zeigt, und eine Fahrerkabine
(18), die sich in einem mittleren Abschnitt des Fahrzeugs befindet, versetzt vom ersten
und vom zweiten Ende (12A, 12B), um das Fahrzeug (10) in die erste und in die zweite
Richtung zu fahren, wobei die Fahrerkabine keine Windschutzscheibe und keine direkte
Sicht in die Fahrtrichtung aufweist und Folgendes umfasst: eine visuelle Bildschirmanordnung
(24) zur Anzeige von Echtzeitbildern des Schienen mindestens vom ersten Ende (12A)
des Fahrzeugs in die erste Richtung (14A),
dadurch gekennzeichnet, dass die Fahrerkabine weiter Folgendes umfasst:
- eine Sitzanordnung (20) zum Sitzen des Fahrers in einer ersten Sitzposition in die
erste Richtung (14A) und zum Sitzen des Fahrers in einer zweiten Sitzposition in die
zweite Richtung (14B), wobei die visuelle Bildschirmanordnung (24) einen ersten visuellen
Bildschirm (24A) umfasst, um Echtzeitbilder der Schienen, aufgenommen vom ersten Ende
des Fahrzeugs in die erste Richtung, einem Fahrer anzuzeigen, der in der ersten Sitzposition
sitzt und in die erste Richtung schaut, und einen zweiten visuellen Bildschirm (24B),
um Echtzeitbilder der Schienen, aufgenommen vom zweiten Ende des Fahrzeugs in die
zweite Richtung, einem Fahrer anzuzeigen, der in der zweiten Sitzposition sitzt und
in die zweite Richtung schaut, und
- eine Schaltpultanordnung (22), um das schienengebundene Fahrzeug in die erste Richtung
(14A) von der ersten Sitzposition zu fahren, und um das schienengebundene Fahrzeug
in die zweite Richtung (14B) von der zweiten Sitzposition zu fahren, wobei der eine
des ersten und des zweiten Bildschirms (24A, 24B) entgegen der Fahrtrichtung deaktiviert
werden kann.
2. Schienengebundenes Fahrzeug nach Anspruch 1, wobei die Schaltpultanordnung (22) ein
erstes Schaltpult (22A) umfasst, um das schienengebundene Fahrzeug in die erste Richtung
von der ersten Sitzposition zu fahren, und ein zweites Schaltpult (22B), um das schienengebundene
Fahrzeug in die zweite Richtung von der zweiten Sitzposition zu fahren.
3. Schienengebundenes Fahrzeug nach Anspruch 2, wobei die Schaltpultanordnung (22) Mittel
umfasst, um die Verwendung des zweiten Schaltpults (22B) zu unterbinden, wenn das
Fahrzeug in die erste Richtung fährt, und um die Verwendung des ersten Schaltpults
(22A) zu unterbinden, wenn das Fahrzeug in die zweite Richtung fährt.
4. Schienengebundenes Fahrzeug nach Anspruch 2 oder Anspruch 3, wobei das erste Schaltpult
(22A) und das zweite Schaltpult (22B) identisch sind.
5. Schienengebundenes Fahrzeug nach Anspruch 1, wobei die Schaltpultanordnung eine drehbare
Schaltpultanordnung (22) umfasst, die zwischen einer ersten Pultposition, um das schienengebundene
Fahrzeug von der ersten Sitzposition in die erste Richtung zu fahren, und einer zweiten
Pultposition um das schienengebundene Fahrzeug von der zweiten Sitzposition in die
zweite Richtung zu fahren, bewegt werden kann.
6. Schienengebundenes Fahrzeug nach einem der vorhergehenden Ansprüche, wobei die visuelle
Bildschirmanordnung mit mindestens einer ersten Videoeinheit (16A) verbunden ist,
um ununterbrochen Bilder der Schienen zur ersten bzw. zur zweiten Richtung hin (14A)
zu erhalten.
7. Schienengebundenes Fahrzeug nach Anspruch 6, wobei die visuelle Bildschirmanordnung
mit mindestens einer zweiten Videoeinheit (16B) verbunden ist, um ununterbrochen Bilder
der Schienen zur zweiten Richtung hin (14B) zu erhalten.
8. Schienengebundenes Fahrzeug nach einem der vorhergehenden Ansprüche, wobei die visuelle
Bildschirmanordnung (24) Unterbindungsmittel zur Unterbindung der Anzeige von Echtzeitbildern
der Schienen vom ersten Ende des Fahrzeugs in die erste Richtung an einen Fahrer,
der in der ersten Sitzposition sitzt und in die erste Richtung schaut, wenn das Fahrzeug
in die zweite Richtung fährt, und zur Unterbindung der Anzeige von Echtzeitbildern
der Schienen vom zweiten Ende des Fahrzeugs in die zweite Richtung an einen Fahrer,
der in der zweiten Sitzposition sitzt und in die zweite Richtung schaut, wenn das
Fahrzeug in die erste Richtung fährt, umfasst.
9. Schienengebundenes Fahrzeug nach einem der vorhergehenden Ansprüche, wobei die Sitzanordnung
(20) einen drehbaren Sitz umfasst, um in der ersten Sitzposition und in der zweiten
Sitzposition zu sitzen.
10. Schienengebundenes Fahrzeug nach Anspruch 5 und 9, wobei sich die drehbare Schaltpultanordnung
mit dem drehbaren Sitz dreht.
1. Véhicule de transport (10) assujetti à une voie, à voiture unique ou à voitures multiples,
pourvu d'une première extrémité (12A) faisant face à une première direction (14A),
d'une deuxième extrémité (12B) faisant face à une deuxième direction (14B) opposée,
et d'une cabine de conduite (18) située dans une section centrale du véhicule décalée
des première et deuxième extrémités (12A, 12B) pour conduire le véhicule (10) dans
les première et deuxième directions, dans lequel la cabine de conduite est sans pare-brise
et sans visibilité directe dans la direction de déplacement et comprend : un ensemble
d'écrans d'affichage visuel (24) pour afficher des images en temps réel de la voie
au moins à partir de la première extrémité (12A) du véhicule dans la première direction
(14A),
caractérisé en ce que la cabine de conduite comprend en outre :
- un ensemble formant siège (20) pour asseoir le conducteur dans une première position
assise dans la première direction (14A), et pour asseoir le conducteur dans une deuxième
position assise dans la deuxième direction (14B), dans lequel l'ensemble d'écrans
d'affichage visuel (24) comprend un premier écran d'affichage visuel (24A) pour afficher
des images en temps réel de la voie prises à partir de la première extrémité du véhicule
dans la première direction pour un conducteur assis dans la première position assise
et regardant dans la première direction, et un deuxième écran d'affichage visuel (24B)
pour afficher des images en temps réel de la voie prises à partir de la deuxième extrémité
du véhicule dans la deuxième direction pour un conducteur assis dans la deuxième position
assise et regardant dans la deuxième direction ; et
- un ensemble formant pupitre de commande (22) pour conduire le véhicule assujetti
à une voie dans la première direction (14A) dans la première position assise, et pour
conduire le véhicule assujetti à une voie dans la deuxième direction (14B) dans la
deuxième position assise, dans lequel celui des premier et deuxième écrans d'affichage
visuel (24A, 24B) qui est opposé à la direction de déplacement peut être désactivé.
2. Véhicule assujetti à une voie selon la revendication 1, dans lequel l'ensemble formant
pupitre de commande (22) comprend un premier pupitre de commande (22A) pour conduire
le véhicule assujetti à une voie dans la première direction dans la première position
assise, et un deuxième pupitre de commande (22B) pour conduire le véhicule assujetti
à une voie dans la deuxième direction dans la deuxième position assise.
3. Véhicule assujetti à une voie selon la revendication 2, dans lequel l'ensemble formant
pupitre de commande (22) comprend des moyens pour empêcher l'utilisation du deuxième
pupitre de commande (22B) lorsque le véhicule se déplace dans la première direction
et pour empêcher l'utilisation du premier pupitre de commande (22A) lorsque le véhicule
se déplace dans la deuxième direction.
4. Véhicule assujetti à une voie selon la revendication 2 ou la revendication 3, dans
lequel le premier pupitre de commande (22A) et le deuxième pupitre de commande (22B)
sont identiques.
5. Véhicule assujetti à une voie selon la revendication 1, dans lequel l'ensemble formant
pupitre de commande comprend un ensemble formant pupitre de commande (22) tournant,
qui peut être déplacé entre une première position de pupitre pour conduire le véhicule
assujetti à une voie dans la première direction dans la première position assise,
et une deuxième position de pupitre pour conduire le véhicule assujetti à une voie
dans la deuxième direction dans la deuxième position assise.
6. Véhicule assujetti à une voie selon l'une quelconque des revendications précédentes,
dans lequel l'ensemble d'écrans d'affichage visuel est relié à au moins une première
unité vidéo (16A) pour acquérir continûment des images de la voie dans la première,
respectivement la deuxième direction (14A).
7. Véhicule assujetti à une voie selon la revendication 6, dans lequel l'ensemble d'écrans
d'affichage visuel est relié à au moins une deuxième unité vidéo (16B) pour acquérir
continûment des images de la voie dans la deuxième direction (14B).
8. Véhicule assujetti à une voie selon l'une quelconque des revendications précédentes,
dans lequel l'ensemble d'écrans d'affichage visuel (24) comprend des moyens d'interdiction
pour empêcher un affichage d'images en temps réel de la voie à partir de la première
extrémité du véhicule dans la première direction pour un conducteur assis dans la
première position assise et regardant dans la première direction lorsque le véhicule
se déplace dans la deuxième direction, et pour empêcher un affichage d'images en temps
réel de la voie à partir de la deuxième extrémité du véhicule dans la deuxième direction
pour un conducteur assis dans la deuxième position assise et regardant dans la deuxième
direction, lorsque le véhicule se déplace dans la première direction.
9. Véhicule assujetti à une voie selon l'une quelconque des revendications précédentes,
dans lequel l'ensemble formant siège (20) comprend un siège pouvant tourner pour s'asseoir
dans la première position assise et dans la deuxième position assise.
10. Véhicule assujetti à une voie selon les revendications 5 et 9, dans lequel l'ensemble
formant pupitre de commande pouvant tourner tourne avec le siège pouvant tourner.