Cruising & Traffic Support (CTS)

Cruising & Traffic Support (CTS) (Some Models)

Cruising & Traffic Support (CTS) (Some Models)

The CTS is a system that reduces the load on the driver while the vehicle is driven on expressways or highways.

The CTS has the following 2 functions.

Constant speed/Headway control function

The function performs headway control to maintain the distance with a vehicle ahead at a constant preset speed without you having to depress the accelerator or brake pedal.

Steering wheel assist function

When vehicle lane lines are detected, the function assists your steering wheel operation to follow the vehicle lane lines.

When vehicle lane lines are not detected, the function assists your steering wheel operation to follow the trajectory of the vehicle ahead.

Warnings and Cautions for Using Cruising & Traffic Support (CTS)

Warnings and Cautions for Using Cruising & Traffic Support (CTS)

 

Do not rely completely on the CTS.

  • The CTS is not an automated driving system. Therefore, the function has limitations. Do not rely completely on the system and always stay on course using the steering wheel.

  • Set a vehicle speed within the speed limit according to the road conditions and the weather conditions.

  • The CTS may not be able to detect a vehicle ahead depending on the type of vehicle ahead and its conditions, the weather conditions, and the road conditions. Additionally, the system might be unable to decelerate sufficiently if the vehicle ahead applies the brakes suddenly or another vehicle cuts into your lane, which could result in an accident.

Do not use the CTS under the following conditions. Otherwise, it may result in an accident.

  • The vehicle is driven on roads other than expressways and highways.

  • The vehicle is driven on roads with sharp curves or with heavy traffic where sufficient distances between vehicles cannot be kept.

  • The vehicle is driven on roads where acceleration and deceleration are frequently repeated.

  • The vehicle is exiting the main lane on an expressway to enter an interchange, a rest area, or a parking area.

  • The vehicle is driven on slippery roads such as icy roads, snow-covered roads, and unpaved roads.

  • The vehicle is driven on a long downslope.

  • The vehicle is driven on a steep slope.

  • A two-wheeled vehicle such as a motorcycle or bicycle is traveling ahead.

  • The vehicle is being towed or towing another vehicle.

  • Proximity warnings activate frequently.

  • Under bad weather conditions (rain, fog, and snow).

  • Tires other than the specified size are used, such as when tire chains or temporary spare tires are used.

  • The tire pressures are not adjusted to the appropriate pressure.

  • Tires with insufficient tread are used.

Switch the CTS off when it is not being used.

Leaving the CTS on when it is not in use is dangerous as it could operate unexpectedly, resulting in an accident.

Do not leave the vehicle while the vehicle is stopped by the CTS control.

Getting out of the vehicle while the stop hold control is operating is dangerous as the vehicle may move unexpectedly and result in an accident. Before leaving the vehicle, switch the CTS off, shift the selector lever to the P position, and apply the parking brake.

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  • Heed the following cautions so that the CTS can operate normally.

    • Do not modify the suspensions.

    • Always use wheels of the specified size for the front and rear wheels. Consult an Authorized Mazda Dealer for tire replacement.

  • Turn off the CTS when the vehicle is running on a chassis roller.

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How to Use the Cruising & Traffic Support (CTS)

How to Use the Cruising & Traffic Support (CTS)

CTS operation conditions

The CTS speed can be set when all of the following conditions are met.

  • The brake pedal is not depressed.

  • The vehicle speed is about 0 km/h (0 mph) to 145 km/h (90 mph).

  • The Mazda Radar Cruise Control is available.

Setting the CTS

  1. Press the CTS switch to turn the system on.

    When the system is on, the CTS standby indication (white) is displayed on the screen.

  2. Accelerate to the desired speed.

  3. Set the vehicle speed by pressing the RES switch up (SET+) or down (SET-).

    Constant speed driving starts when the vehicle speed is set. In addition, the set speed is displayed on the screen, and the CTS standby indication (white) changes to the CTS set indication (green).

If a vehicle ahead is detected while traveling at a constant speed, the system switches to headway control. The vehicle ahead indication is displayed on the screen while in headway control.

Driving condition

Instrument cluster display

Active driving display indication

During travel at constant speed

During travel under headway control

  1. Set speed

  2. Vehicle ahead indication

 

  • If there is a structure on the road or an obstruction at a low height off the ground in front of the vehicle, the system may recognize it as a vehicle ahead.

  • Acceleration and deceleration by accelerator pedal operation takes priority while traveling at a constant speed or in headway control. When the accelerator pedal is released, the vehicle returns to driving at a constant speed or headway control at the set speed.

  • The Forward Sensing Camera (FSC) may not be able to detect target objects correctly, and the CTS may not operate normally.

    Refer to Forward Sensing Camera (FSC) (Search).

  • If a vehicle ahead is traveling at an extremely low speed, the system may not detect it correctly.

  • While driving using the CTS, intended engine braking is not applied even if the selector lever is operated.

  • The brake lights turn on while the brakes are operating by the CTS control.

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The steering assist function operates if all of the following conditions are met while traveling at a constant speed or in headway control.

  • When driving near the center of the lane and the white (yellow) lane lines on both sides are detected clearly, or a vehicle ahead is detected clearly in front of your vehicle and at less than about 56 km/h (35 mph).

  • The steering wheel is not turned sharply.

  • The turn signal lever is not operated.

When the steering assist function operates, the steering assist operation display changes from white to green.

Driving condition

Instrument cluster display

Active driving display indication

Steering assist within vehicle lane lines

Steering assist along the trajectory of the vehicle ahead

 

  • The steering assist function assists the steering wheel operation so that the vehicle remains near the center of the driving lane, however, the function might not be able to keep the vehicle near the center of the driving lane when any of the following conditions is met.

    • The vehicle speed is high.

    • The vehicle is making a sharp turn.

    • The vehicle is driven on a road with steep or up and down (wavy) slopes.

    • The vehicle is driven on a road with a large lateral gradient.

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If the vehicle ahead stops during headway control, your vehicle in headway control also stops. While the vehicle is stopped, the CTS indicator light in the Instrument cluster turns on.

When the vehicle ahead accelerates from a stop and one of the following operations is performed, your vehicle starts driving.

  • Press the RES switch.

  • Depress the accelerator pedal.

If you do not start driving the vehicle after the vehicle ahead has resumed driving, the system urges the driver to resume driving.

 

  • If the vehicle ahead resumes driving within 3 seconds after the vehicle was stopped by the system, your vehicle also resumes driving automatically.

  • If the vehicle is stopped by the system continuously for 10 minutes or longer, the parking brake is applied automatically. At this time, the CTS is canceled.

  • Even if the CTS is canceled while the vehicle is stopped, the vehicle is held in its stopped position.

    Refer to AUTOHOLD (Search).

  • If the CTS is canceled while the vehicle is stopped and there is no vehicle ahead, you cannot resume driving the vehicle using the RES switch. Depress the accelerator pedal and start driving the vehicle.

  • If the i-stop operation conditions are met while the vehicle is stopped, the i-stop function operates without depressing the brake pedal. The engine restarts automatically when you start driving the vehicle.

    Refer to i-stop (Search).

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Changing the set vehicle speed

Changing the set vehicle speed using the RES switch

Press the RES switch up (SET+) or down (SET-) to the desired speed.

  • Press and release immediately: 1 km/h (1 mph)

  • Press and hold: 10 km/h (5 mph)

Changing the set vehicle speed using the accelerator pedal

Depress the accelerator pedal until the vehicle speed reaches the desired speed, then press the RES switch up (SET+) or down (SET-).

Setting the distance-between-vehicles during headway control

  1. Press the CANCEL switch up (longer distance) or down (shorter distance).

CTS is not operating (white)

Distance-between-vehicles guideline

(at 80 km/h (50 mph) vehicle speed)

Instrument cluster display

Active driving display indication

Long (about 50 m (164 ft))

Medium (about 40 m (131 ft))

Short (about 30 m (98 ft))

Extremely short (about 25 m (82 ft))

CTS is operating (green)

Distance-between-vehicles guideline

(at 80 km/h (50 mph) vehicle speed)

Instrument cluster display

Active driving display indication

Long (about 50 m (164 ft))

Medium (about 40 m (131 ft))

Short (about 30 m (98 ft))

Extremely short (about 25 m (82 ft))

 

  • The distance-between-vehicles can be set to 4 levels: Long, medium, short, and extremely short distance.

  • The distance-between-vehicles differs depending on the vehicle speed, and the slower the vehicle speed, the shorter the distance.

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Warnings by CTS

Close proximity warning

If your vehicle approaches a vehicle ahead while in headway control, a warning sound and a display cautions you.

  1. “Depress Brake Pedal”

 

  • The close proximity warning may not be activated in the following cases.

    • The vehicle is driven at the same speed as the vehicle ahead.

    • Directly after the CTS is set.

    • Immediately after the accelerator pedal is released.

    • Another vehicle cuts into the driving lane.

  • Do not use the CTS system under conditions in which the close proximity warnings are frequently activated.

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Steering assist limit warning

If the steering assist function cannot keep the vehicle within the lane lines, a screen display and a warning sound urge you to operate the steering wheel.

Instrument cluster

Active driving display

Warning for driving with hands off the steering wheel

If you take your hands off the steering wheel, a warning (amber) is indicated on the instrument cluster and the active driving display. Then, if you continue to leave your hands off the steering wheel, a warning (red) is indicated on the instrument cluster and the active driving display and a warning sound is activated.

This warning is canceled by lightly operating the steering wheel to the left or right.

Instrument cluster

Warning (amber)

Warning (red)

Active driving display

Warning (amber)

Warning (red)

The CTS is temporarily canceled

Constant speed/Headway control function

If any of the following conditions is met, the constant speed/headway control function is temporarily canceled.

  • The brake pedal is depressed.

  • The CANCEL switch is pressed one time.

  • The DSC has operated.

  • The Smart Brake Support (SBS) has operated.

  • The front radar sensors cannot detect target objects.

  • The parking brake is applied.

  • Any door is opened.

  • The driver’s seat belt is unfastened.

  • The frequency of the braking operation by the CTS is high.

If the constant speed/headway control function is temporarily canceled, it will resume operation at the previously set speed by pressing the RES switch.

Steering assist function

If any of the following conditions is met, the steering assist function is temporarily canceled. The steering assist function is automatically restored when its operation conditions are met.

  • The constant speed/headway control function is canceled.

  • White (yellow) lane lines cannot be detected or a vehicle ahead cannot be recognized.

  • The turn signal lever is operated.

  • The steering wheel is operated abruptly.

  • Hands are off the steering wheel.

  • The vehicle is making a sharp curve.

  • The vehicle crosses a lane line.

  • The width of the vehicle lane is narrow or wide.

 

The notification method when the steering assist function is canceled can be changed.

Refer to the Settings section in the Mazda Connect Owner's Manual.

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Turning off the CTS

Press the CTS switch.

The CTS set indication (green) /CTS standby indication (white) turns off, and the CTS turns off.

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