PCS (Pre-Collision System)- Page 171

171

4-5. Using the driving support systems

4

Driving

When the turn signal lights are not flashing, support for turning left or right at an intersection 

which targets oncoming vehicles does not work.

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Object detection function

The system detects objects based on their 

size, profile, motion, etc. However, an object 

may not be detected depending on the sur-

rounding brightness and the motion, pos-

ture, and angle of the detected object, 

preventing the system from operating prop-

erly. (



P.172)

The illustration shows an image of detect-

able objects.

■

Conditions under which the system may 

operate even if there is no possibility of a 

collision

●

In some situations such as the following, 

the system may determine that there is a 

possibility of a frontal collision and oper-

ate.

• When passing a detectable object, etc.

• When changing lanes while overtaking a 

detectable object, etc.

• When approaching a detectable object 

in an adjacent lane or on the roadside, 

such as when changing the course of 

travel or driving on a winding road

• When rapidly closing on a detectable 

object, etc.

• When approaching objects on the road-

side, such as detectable objects, guard-

rails, utility poles, trees, or walls

• When  there  is  a  detectable object or 

other object by the roadside at the 

entrance of a curve

• When there are patterns or paint in front 

of your vehicle that may be mistaken for a 

detectable object

• When the front of your vehicle is hit by 

water, snow, dust, etc.

• When overtaking a detectable object 

that is changing lanes or making a 

right/left turn

Detectable objects

Vehicle speed

Oncoming vehicle 

speed

Relative speed 

between your vehi-

cle and object

Oncoming vehicles

Approx. 10 to 15 mph 

(15 to 25 km/h)

Approx. 20 to 28 

mph (30 to 45 km/h)

Approx. 28 to 43 

mph (45 to 70 km/h)

Pedestrians

Approx. 7 to 15 mph 

(10 to 25 km/h)



Approx. 7 to 15 mph 

(10 to 25 km/h)