- Toyota Safety Sense, or TSS, is a suite
of active safety technologies
and advanced driver assistance systems
designed to help address three key areas
of accident protection: preventing
or mitigating frontal collisions,
keeping drivers within their lane,
and enhancing road safety during nighttime driving.
TSS 2.5 and 2.5+ build on the previous suites
by enhancing the functionalities of its features.
Like TSS 2.0, TSS 2.5 and 2.5+
consist of six active safety and driver assistance systems
that utilize a high-resolution camera
and millimeter-wave radar.
Let's take a moment to learn about each one.
Pre-Collision System, or PCS, is designed to help mitigate
or avoid a frontal collision by detecting a vehicle
or a pedestrian in either daytime or low-light situations,
as well as daytime detection of a bicyclist.
When a potential hazard is detected,
it may provide audible and visual alerts,
and automatic braking in certain conditions.
TSS 2.5 and 2.5+ versions of PCS take this a step further
through enhancements that expand the response range
and enable two additional functionalities:
intersection support and emergency steering assist.
At intersections, the system may detect an oncoming vehicle
or pedestrian when performing a left-hand turn,
as well as an oncoming pedestrian
when performing a right-hand turn.
Meanwhile, emergency steering assist
is designed to assist the driver
in driver-initiated emergency steering maneuvers
within their lane, reacting to a pedestrian for TSS 2.5,
as well as a vehicle or bicyclist for 2.5+.
This system can help the driver stabilize their maneuver
to help the vehicle stay within its lane.
Lane Departure Alert, or LDA, is designed
to detect lane departure when traveling
on relatively straight roads with clear lane markings.
If LDA determines that the vehicle
is starting to unintentionally deviate
from its visibly marked lane, the system alerts the driver
with an audio and visual alert,
or even steering wheel vibration on some vehicles.
In addition, many vehicles also include
LDA with Steering Assist.
When this functionality is enabled and LDA senses
that the vehicle is unintentionally drifting from its lane,
the system may automatically
make small corrective steering inputs to help the driver
keep the vehicle in its lane.
Automatic High Beams, or AHB, is a safety system
designed to help the driver see more clearly at night,
while also reducing glare for other drivers.
When activated, AHB is designed to detect the headlights
of oncoming vehicles and taillights of preceding vehicles,
then automatically toggle accordingly
between high and low beams.
Dynamic Radar Cruise Control, or DRCC,
is a high-tech cruise control system that is designed
to detect slower vehicles in front of you
and automatically adjust the vehicle's speed
to help maintain a preset distance behind the vehicle ahead.
Many vehicles also feature Full-Speed Range
Dynamic Radar Cruise Control, which is designed to enable
low-speed following, speed matching, stopping,
acceleration, and deceleration to a preceding vehicle.
For TSS 2.5+, DRCC benefits
from improved curve speed management
in a manner that feels more like natural driving,
using the camera and yaw sensors to sense curves
and reduce speed beforehand,
and return to the set speed afterward.
Lane Tracing Assist, or LTA, operates automatically
when both Full-Speed Range Dynamic Radar Cruise Control
and Lane Departure Alert are active.
It is designed to keep the vehicle centered
in its visibly marked lane and preemptively
avoid unintended lane departures while cruising.
LTA monitors lane markings, as well as the path
of the vehicle ahead, if needed, and is designed
to automatically make constant steering inputs
to help keep the vehicle centered in its lane.
Road Sign Assist, or RSA, is designed
to read certain traffic signs and display them
on the vehicle's Multi-Information Display.
This provides the driver
with additional awareness of posted road signs.
In some cases, the system may also provide alerts,
like if the speed exceeds the posted limit,
or if a Stop sign is ignored.
So, that's a brief overview of the six systems
that make up TSS 2.5 and 2.5+.
Please remember that drivers are responsible
for their own safe driving.
Always pay attention to your surroundings and drive safely.
For more information, please visit toyota.com/safety-sense,
or review your Owner's Manual.