2016 CITROëN C4 PICASSO User Manual

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186

Driving

C4-Picasso-II_en_Chap04_conduite_ed01-2016

Fatigue detection system

Dependingonversion,the"Drivingtime

warningsystem"maybecombinedwiththe

"Fatiguedetectionsystem".

Usingacameraplacedatthetopofthe

windscreen,thesystemassessesthedriver's

levelofvigilancebyidentifyingvariationsin

trajectorycomparedtothelanemarkings.

This system is particularly suited to fast roads

(speedhigherthan40mph(65km/h)).

Once the system considers that the behaviour

ofthevehiclesuggestsacertainleveloffatigue

orinattentionbythedriver,ittriggersthefirst

levelofalert.

Thedriveristhenalertedbythemessage

"Take care!", accompanied by an audible

signal.

Afterthreefirstlevelalerts,thesystemtriggers

anewalertwiththemessage"Take a break!",

accompanied by a more pronounced audible

signal.

Incertaindrivingconditions(poorroad

surfaceorstrongwinds),thesystem

maygivealertsindependentofthe

driver'slevelofvigilance.

Thefollowingsituationsmayinterfere

with operation of the system or prevent

itworking:

- poorvisibility(inadequatelighting

oftheroadway,fallingsnow,heavy

rain,densefog,...),

- dazzle(headlampsofanoncoming

vehicle, low sun, reflections on

adamproad,leavingatunnel,

alternatingshadeandlight,...),

- windscreen area located in front

ofthecamera:dirty,misted,frost-

covered,snow-covered,damaged

orcoveredbyasticker,

- lanemarkingsabsent,worn,

masked(snow,mud)ormultiple

(roadworks,...),

- close to the vehicle ahead (lane

markingsnotdetected),

- roadsthatarenarrow,winding,...

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User Manual - Page 188