[VoltenRock]

My new '17 has DC I & II but no ACC with its "high speed braking."

So today, I had it in plain old generic cruise with the forward collision alert activated. A car in front of me slowed to take an exit. I was in no danger of actually hitting it, but FCA nevertheless activated and immediately the car "felt" like it was braking.

Since I never had an FCA in cruise before, I thought "Huh, do I have high speed braking?!?"

I quickly realized that the FCA shut off the cruise and, since I was in LOW, it resulted in rapid deceleration.

Not bad for no ACC w/ high speed braking!

Someone with quick fingers could probably just keep getting FCAs and then resetting it to keep up with the flow. Not that I recommend it, or would find a "manual" ACC to be worth the trouble.

But having at least a modified version of the high speed braking with LOW and cruise is a nice benefit.

 

[Loboc]

What are you calling ‘high speed’? ACC works at all speeds.

 

[CatsAreGods]

I believe he's referring to the Forward Automatic Braking (low speed only) that non-ACC Volts have.

 

[VoltenRock]

Poor Man's ACC (or high speed automatic speed braking)

Should have added the AUTOMATIC braking to make it clear. Non-ACC Volts with DC 1&2 only have low-speed automatic braking <37 mph. ACC Volts have it at all speeds.

But it?s good to know FCA shuts off cruise on non-ACC Volts and, in low, at least gives you some slowing and more reaction time if needed.

 

[ClarksonCote]

Yes, this same behavior is present on the Gen 1 Volt as well. FCA will disable cruise control, and if you're in Low, it slows you down quite effectively without user intervention.

 

[DonC]

Interesting. Hadn't really considered this. How fast were you going? This might even work more effectively on the Bolt EV since the regen is so much stronger.

 

[VoltenRock]

Hi, Don -- Had the cruise at 67 MPH and was in the right lane. I think the FCA was set at the midpoint.

 

[JRRF]

Sounds scary. Even with ACC I've had the system intervene and it's not "fun".