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Hydraulic Brake Assist (HBA)
Hydraulic Brake Assist, is incorporated into the ABS to help
produce the minimum stopping distance when emergency brak-
ing is demanded. By continuous monitoring of the brake pressure,
the ABS control module is able to identify when such an event
occurs, and when necessary, increases hydraulic pressure up
to the anti-lock activation threshold, thus producing optimum
controlled braking.
Electronic Brake Distribution (EBD)
This feature addresses the instability that could be caused
under heavy braking due to the tendency of the lightly loaded
rear wheels to lock prematurely. Electronic Brake Distribution is
incorporated into the ABS to limit the rear brake system hydraulic
pressure prior to any anti-lock intervention.
Electronic Differential Lock (EDL)
If hard acceleration is demanded in conditions of variable
surface grip, or when cornering forces result in a lightly loaded
inside rear wheel, there will be a tendency for drive torque to
overcome the grip available, resulting in spinning of the lightly
loaded wheel. When this situation is detected by the ABS con-
troller, brake pressure is applied to the spinning wheel in order
to transfer drive torque to the opposite wheel, thus maintaining
drive and aiding vehicle stability.
See also 'Lotus Dynamic Performance Management' (page
91).
WARNING
The enhanced vehicle control that these features provide
should not induce any relaxation of caution or vigilance by the
driver. Physical limits of cornering and braking still apply, and
excessive speed may result in loss of control and an accident.
The driver is at all times responsible for the judgement of ap-
propriate speed.
Parking Brake
The parking brake, which operates on only the rear wheels,
is applied by a hand lever mounted between the seats. A red
tell tale lamp in the instrument cluster warns of parking brake
application (see 'Tell Tale Lamps').
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