Rules Flashcards
How must the shutdown Buttons be marked?
a) red spark on a white edged blue triangle
b) yellow spark on black background
c) Labeled with a red, good seeable STOP sign!
d) black triangle on yellow background
Answer: red spark on a white edged blue triangle
Rule: T11.4.5 The international electrical symbol consisting of a red spark on a white-edged blue triangle must be affixed in close proximity to each shutdown button.
What is the minimum wheelbase of the vehicle?
a) 1600 mm
b) 1525 mm
c) 1550 mm
d) 1425 mm
Answer: 1525 mm
Rule: T2.7.1 The vehicle must have a wheelbase of at least 1525mm.
The Autonomous System Master Switch (ASMS), as the name implies, should be able to turn the autonomous system on or off. Which of the following must be fulfilled, when the ASMS is in “Off” position?
a) It can be switched to “On” Position when a person is inside the vehicle
b) The vehicle must be able to be pushed
c) The processing units should be turned off
Answer: The vehicle must be able to be pushed
Rule: DV2.2.5 When the ASMS is in “Off” position, the following must be fulfilled:
• No steering, braking and propulsion actuation can be
performed by request of the autonomous system.
• The sensors and the processing units can stay
operational.
• The vehicle must be able to be pushed as specified in
A6.7.
• It must be possible to operate the vehicle manually as
a normal CV or EV.
Up to what distance to the tractive system do electrically conductive parts have to be grounded?
a) 50mm
b) Everything has to be grounded
c) 150mm
d) 100mm
Answer: 100mm
Rule: EV3.1.1 Electrically conductive parts of the vehicle (e.g. parts made of steel, (anodized) aluminum, any other metal parts, etc.)
• within 100mm of any TS component
• the driver harness mounting points
• the seat mounting points must have a resistance
below 300mΩ(measured with a current of 1A) to LVS
ground.
Which failure modes of digitally transmitted signals must be detected?
a) Data corruption, Loss and delay of Messages, Out of Range
b) Open Circuit, Short Circuit to Ground
c) Open Circuit, Short Circuit to Ground, Data corruption, Loss and delay of Messages, Out of Range
Answer: Open Circuit, Short Circuit to Ground, Data corruption, Loss and delay of Messages, Out of Range
Rule: T11.9.2 Any of the following SCS single failures must result in a safe state of all connected systems:
(a) Failures of signals transmitted by cable:
• Open circuit
• Short circuit to ground
(b) Failures of analog sensor signals transmitted by
cable:
• Short circuit to supply voltage
(c) Failures of sensor signals used in programmable
devices:
• Implausibility due to out of range signals, e.g.
mechanically impossible angle of an angle sensor.
(d) Failures of digitally transmitted signals by cable or
wireless:
• Data corruption (e.g. checked by a checksum)
• Loss and delay of messages (e.g. checked by
transmission time outs) Signals might be a member
of multiple signal classes, e.g. analog signals
transmitted by cable might be a member of T11.9.2.a,
T11.9.2.b and T11.9.2.c. If a signal failure is
correctable, e.g. due to redundancy or worst case
values, the safe state must be entered as soon as an
additional non correctable failure occurs.
What is the maximum permitted voltage between two components of LVS?
a) 70V DC
b) 40V ACRMS
c) 25V ACRMS
d) 50V DC
Answer: 25V ACRMS or 60V DC
Rule: T11.1.2 The maximum permitted voltage that may occur between any two electrical connections in the LVS is 60VDC or 25VACRMS.
Which one is correct in terms of the Brake System of EVs?
a) Brake-by-Wire is allowed both in manual and driverless mode
b) The hydraulic brake system has to have two independent hydraulic circuits
c) Brake energy regeneration remains active after the hydraulic brake system is actuated
d) Regenerative braking is only allowed if the RBS is active
Answer: The hydraulic brake system has to have two independent hydraulic circuits
Rule: T6.1.2 The brake system must have two independent hydraulic circuits such that in the case of a leak or failure at any point in the system, effective braking power is maintained on at least two wheels. Each hydraulic circuit must have its own fluid reserve, either by the use of separate reservoirs or by the use of a dammed reservoir.
How many team members are allowed to be within a dynamic area at once?
a) 1
b) 4
c) 3
d) 6
Answer: 4 (just enough to push the car. Also 4 vests, including driver)
Rule: D1.2.3 Only four members per team, including the driver, may enter the dynamic area at one time.
What is the necessary withstand voltage to consider to Circuits as galvanically isolated if the TS voltage is 600V?
a) 1800V
b) 1500V
c) 750V
d) 300V
Answer: 1800V
Rule: EV1.2.1 Galvanic Isolation – two electric circuits are defined as galvanically isolated, if all of the following are true:
• the resistance between both circuits is≥500Ω/V,
related to the maximum TS voltage of the vehicle, at a
test voltage of maximum TS voltage or 250V,
whichever
is higher.
• the withstand voltage between both circuits is higher
than three times the maximum TS voltage or 750V,
whichever is higher.
What is the maximum TS poer at the outlet of the TS accumulator?
a) 100 kW
b) 120 kW
c) 60 kW
d) 80 kW
Answer: 80 kW
Rule: EV2.2.1 The TS power at the outlet of the TS accumulator container must not exceed 80kW
The Autonomous System Status Indicator (ASSI) flashes blue when the status “AS Emergency” occurs. What does this status mean?
a) EBS activated, TS on, R2D on
b) EBS activated, TS off, R2D off
c) EBS unavailable, TS off, R2D off
d) EBS inactive, TS on R2D flashing
Answer: EBS activated, TS off, R2D off
Rule: DV2.4 - DV2.5 find figure 21 (AS state machine)
How does the car respond to a BSPD Error?
a) Driver gets notified, nothing happens.
b) SC gets opened, but not latched
c ) Car gets shut off and latched but is reactivateable
after a specified wait (10s after the cause for the
opening of the SC is gone)
d) SC gets opened and latched, DNF
Answer: Car gets shut off and latched but is reactivateable after a specified wait (10s after the cause for the opening of the SC is gone)
Rule: T11.6.1 A standalone non-programmable circuit, the BSPD, must open the shutdown circuit, see EV6.1 and CV4.1, when hard braking occurs, whilst ≥5kW power is delivered to the motors. The shutdown circuit must remain open until power cycling the LVMS or the BSPD may reset itself if the opening condition is no longer present for more than 10s.
What is the required spacing between TS and LVS in one enclosure, when isolating barriers are not used, for Voltage between 100 and 200 V DC?
a) 10 mm
b) 20 mm
c) 30 mm
d) 40 mm
Answer: 20mm
Rule: EV4.3.3 Where both TS and LVS are present within an enclosure, they must be separated by insulating barriers made of moisture resistant, UL recognized or equivalent insulating materials, rated for 150◦C or higher (e.g. Nomex based electrical insulation), or maintain the following spacing through air, or over a surface (similar to those defined in UL1741):
Voltage Spacing
U <100VDC 10mm
100VDC < U <200VDC 20mm
U >200VDC 30mm
Which type of cell of the following for example is allowed for the tractive system?
a) Lithium polymer
b) Molten salt
c) Fuel cells
Answer: Lithium polymer
Rule: EV5.2 AllowedTractiveSystemCells
EV5.2.1 All types of cells except molten salt and thermal batteries are allowed.
EV5.2.2 Fuel cells are prohibited.
What color should have all TS wiring, that runs outside of the TS enclosures?
a) red
b) yellow
c) orange
d) blue
Answer: orange
Rule: EV4.5.8 All TS wiring that runs outside of TS enclosures must
• be enclosed in separate orange non-conductive
conduit or use an orange shielded cable. The conduit
must be securely anchored to the vehicle, but not to
wire, at least at each end.
• be securely anchored at least at each end so that it
can withstand a force of 200N without straining the
cable end crimp.
Body work is not sufficient to meet this enclosure requirement.
