Is Smart Cruise improved on the 2018s? I find that the Smart Cruise on my 2015 G80 has a couple of annoying flaws. It's very aggressive at braking for cars crossing in front of you even if they're far away. Also, if you're following a car with Smart Cruise enabled and it leaves your lane, revealing stopped cars in your lane (they might be very far away, this doesn't only happen if the stopped cars are close), the SC won't detect the stopped cars. It will keep your speed or even accelerate. If you don't manually brake the SC will happily ram those cars.
Sounds right. They are not flaws but limitations of technology. The SCC is a computer with a sensor. It does not have a brain that sees far ahead and anticipates the way you can.
In the situation of a car moving out of the lane, the sensor tells the computer, "all clear ahead, ok to get back up to speed" until the sensor detects the car ahead. It does not see as far ahead as you do.
As for braking for the car moving across, it senses it but has not yet been able to determine what speed it is travelling so it slows you in case it is very slow or stopped. You see what the other driver is doing, the computer just knows a mass of metal moved in front of it.
It is also possible to make some adjustments to sensitivity/ From the manual:
The sensitivity of vehicle speed
when following the front vehicle to
maintain the set distance can be
adjusted. Go to the 'User Settings →
Driving Assist → SCC (Smart Cruise
Control Response) → Slow/Normal/
Fast' on the LCD display. You may
select one of the three stages you
prefer.
• Slow:
Vehicle speed following the front
vehicle to maintain the set distance
is slower than normal speed.
• Normal:
Vehicle speed following the front
vehicle to maintain the set distance
is normal
• Fast:
Vehicle speed following the front
vehicle to maintain the set distance
is faster than normal speed.
When the Smart Cruise Control
System is ON, you can set and maintain
the distance from the vehicle
ahead of you without pressing the
accelerator or brake pedal.
Each time the button is pressed, the
vehicle to vehicle distance changes
as follows:
For example, if you drive at 56 mph
(90 km/h), the distance maintain as
follows:
Distance 4 - approximately 172 feet
(52.5 m)
Distance 3 - approximately 130 feet
(40 m)
Distance 2 - approximately 106 feet
(32.5 m)
Distance 1 - approximately 82 feet
(25 m)
The Smart Cruise Control
System cannot recognize a
stopped vehicle, pedestrians
or an oncoming vehicle.
Always look ahead cautiously
to prevent unexpected and
sudden situations from occurring.
• Vehicles moving in front of
you with a frequent lane
change may cause a delay in
the system's reaction or may
cause the system to react to a
vehicle actually in an adjacent
lane. Always drive cautiously
to prevent unexpected and
sudden situations from occurring.
• Always be aware of the selected
speed and vehicle to vehicle
distance.