Brake light [T.3.4]

• Must be visible, even in intense sunlight

Accelerator system [T.4]

• Must have two electrically separate sensors

• Sensors must have different transfer functions

• Sensor circuits must have resistors to make a short circuit result in a 0% reading

• If a reading is received that is outside of the possible range, the motor controller must deactivate motor power

• The motor controller may only accept up to a 10% difference in readings for 100 msec before deactivating motor power

• Must have a detachable connector or switched breakout box to allow for disconnecting each sensor

• ETC systems form must contain a detailed description of all possible failure modes including, but not limited to signal out of range, time outs, corrupted messages, and lost messages

• Integrity of motor command signal must be maintained at all stages

Brake system encoder (BSE) [T.4.3]

• There must be a sensor for measuring brake line pressure or pedal position

• If an abnormal or no reading is read for more than 100 msec, the motor power must be deactivated

• The ETC systems form must contain a detailed description of all possible failure modes including, but not limited to signal out of range, time outs, corrupted messages, and lost messages

Low Voltage Battery [T.9.2]

• Low voltage batteries must be securely mounted within the chassis below the height of the shoulder belt mount

• Low voltage batteries must have overcurrent protection that trips at or below the maximum specified discharge current of the cells

• The positive terminal must be insulated

• Any wet-cell battery in the driver’s compartment must be contained in a nonconductive marine type container or equivalent

• Lithium chemistry battery packs must have a sturdy, rigid casing made from nonconductive material or be commercially available as an OEM style replacement

• All batteries using chemistry other than lead-acid must be presented at technical inspection with markings identifying it for comparison to a datasheet or other documentation that prove that the pack and supporting electronics meet all rules requirements

Grounded low voltage system general requirements [EV 4.4]

• The grounded low voltage system must be below 60 V DC and must be grounded to the chassis

• The grounded low voltage system must include two master switches that meet the following requirements

• The grounded low voltage system must have a measuring point that is connected to the ground of the low voltage system

• • This measuring point must be next to the tractive system measuring point

• • The measuring point must be be a black 4mm banana jack marked “GND”

Vehicle operation

• The vehicle must energize in the following manner: grounded low voltage active, tractive system active, then ready to drive.

• Ready to drive

• • The vehicle will respond to motor inputs once the tractive system is active, the brake pedal is pressed and held, and the driver preforms a specific manual action to activate (such as pressing a specific button in the cockpit)

• • Once the ready to drive state is activated, the vehicle must make a ready to drive sound for one to three seconds that is easily recognizable and is at least 80 dBA