I've had a couple recent incidents with TACC enabled that have me questioning whether its reliability.
The first incident was back in the 6.1 days (believe it was with software .179), where I approached a car slightly ahead of me in the lane to my right that proceeded to put its left turn signal on, then started to move left (still within its lane). Had I not been in TACC, I would have at least taken my foot off the accelerator briefly to give myself a little time and room to judge the intentions of that car as I approached -- standard defensive driving technique that I imagine most experienced drivers would perform. TACC on the other hand ignored the situation as if it weren't happening and simply followed the car directly in front of me at a higher rate of speed. Sure enough, the car in the lane to my right eventually breached the divider line to move into my lane and TACC reacted abruptly with a weak brake (this was pre-Emergency braking) and a beeping collision warning. Having monitored the situation closely with my foot resting above the brake, I easily brought the situation under control with a hard brake action... but not before I was left wondering whether TACC could be trusted in traffic. Fine, I thought... chaulk it up to the immature algorithms in that early TACC implementation.
Incident two was just the other day. Now running 6.2 (.124), I was driving along with TACC on with following distance set to "5" when traffic in front of me had quickly slowed down on a straight away. TACC seemed to react very sluggishly to the situation and again put on the audible collision warning as it applied a late brake. I didn't wait to see if it would have stopped in time and hit the brakes myself to make sure I could stop in time. Again, isn't the whole point of TACC to avoid such a situation in stop and go traffic in the first place?
Anyone else having similar TACC experiences?
The first incident was back in the 6.1 days (believe it was with software .179), where I approached a car slightly ahead of me in the lane to my right that proceeded to put its left turn signal on, then started to move left (still within its lane). Had I not been in TACC, I would have at least taken my foot off the accelerator briefly to give myself a little time and room to judge the intentions of that car as I approached -- standard defensive driving technique that I imagine most experienced drivers would perform. TACC on the other hand ignored the situation as if it weren't happening and simply followed the car directly in front of me at a higher rate of speed. Sure enough, the car in the lane to my right eventually breached the divider line to move into my lane and TACC reacted abruptly with a weak brake (this was pre-Emergency braking) and a beeping collision warning. Having monitored the situation closely with my foot resting above the brake, I easily brought the situation under control with a hard brake action... but not before I was left wondering whether TACC could be trusted in traffic. Fine, I thought... chaulk it up to the immature algorithms in that early TACC implementation.
Incident two was just the other day. Now running 6.2 (.124), I was driving along with TACC on with following distance set to "5" when traffic in front of me had quickly slowed down on a straight away. TACC seemed to react very sluggishly to the situation and again put on the audible collision warning as it applied a late brake. I didn't wait to see if it would have stopped in time and hit the brakes myself to make sure I could stop in time. Again, isn't the whole point of TACC to avoid such a situation in stop and go traffic in the first place?
Anyone else having similar TACC experiences?