Cruise Control cancelling itself

[Pahaska]

I sometimes take a 40mph limit county road near my home as a shortcut. It is easy to speed on that road and I often meet a county mounty there, so I set the cruise control at 45 and keep off the gas pedal. Navigation is not active. On every occasion, the cruise control cancels itself at exactly the same place on the road with no input from me. There is a T-intersection with another county road there and I am driving on the straight through portion of the T with no need to stop or turn. The road is straight and fairly level at that point. The cancellation comes precisely in line with the side road joining.

I know there is input from the GPS and maps since I get "curve ahead" warnings on other roads. Some similar mechanism must be cancelling my cruise control but I have no clue what it could be.

 

[genesis@genesisworld.com]

John- Sounds to me like the radar is picking up something at that intersection. COULD be another RF signal.

 

[Pahaska]

John- Sounds to me like the radar is picking up something at that intersection. COULD be another RF signal.

Possibly, but there isn't anything much near that corner. OTOH, there are several power poles there.

Doesn't really matter since I just hit resume, but I find it interesting that it is persistent. First couple of times, I wondered what I had done to cause it to cancel, now I expect it.

 

[uncarich]

At one point Toyota speeding out of control thought to be power lines. I pass a a medical scan facility that drives my radio berserk

 

[JimB47]

I had an Infiniti once that did a similar thing. It would come out of cruise when I hit a bump in the road a certain way. It turned out to be a switch related to the brake pedal position that was being activated. The vibration from the bump made the cruise control think I stepped on the brake pedal.