For us in the northern climates TACC is often disabled due to build up of snow on the forward looking radar. Furthermore, any type of cruise control is unsafe in adverse road conditions.
What would help is a alternative to Cruise Control that needs no sensors and only limits the top speed of the vehicle, similar to Mercedes Benz' speed limiter (LIM).
I think Tesla should add LIM mode to the cars so we can switch between TACC and LIM by pressing the button on the end of the Cruise Control stalk.
This was discussed a little in a previous thread although I feel the OP there was misunderstood.
What is LIM?
It is a function which prevents the car from going faster then the set limit when the accelerator is depressed normally.
What sensors does LIM need?
None. Speed limit information from the front camera should be used when available for conveniance.
How should LIM be activated?
The Limiter should be activated with the push button on the end of the cruise control stalk; it should toggle between Limiter and TACC/CC.
When is LIM better than TACC/CC?
When driving in snowy/icy/wet conditions.
Why not just use TACC?
The Idea is not to replace TACC but to have LIM as backup as TACC isn't always available, sometimes snow or dirt has accumulated on the forward facing radar disabling it.
Also TACC isn't always safe to use, authorities discourage cruise control use on slippery surfaces as reaction times get longer.
Why not normal sensorless cruise control when the sensors are blocked?
Normal CC is too similar to TACC and would increase the risk of rear-ending the car in front dramatically, LIM requires drivers to have their foot on the accelerator which is a different behavior from TACC and therefore minimizes the possibility of mixing them up.
I bring this up because I frequently have TACC get disabled on me when driving in sleet and then I catch myself going too fast, which as anyone who's driven a Tesla knows is very easy to do.
I believe adding LIM would be very easy for Tesla because it needs no sensors but I would like the same functionality regarding speed limit signs, i.e. that the car would show the speed limit if it can read the signs and the same offset would apply as to TACC.
Also I would like it if you could switch between modes with either engaged and the currently selected speed would apply to the other mode.
Who's with me?