On Wed, 21 Mar 2018 23:40:04 -0500, Char Jackson
wrote:

On Wed, 21 Mar 2018 16:26:09 -0700, Gene Wirchenko
wrote:

On Wed, 21 Mar 2018 14:03:22 -0400, Keith Nuttle
wrote:

[snip]

This will take years, and a lot of money which many governments
organizations do not have. Even then what will happen when the Live
speed sign is vandalized, hit by a car, or a deer is standing where the
car can not communicate with the sign

True. It is bad enough when snow covers the sign so it can not
be read. I have encountered this many times in British Columbia,
Canada.

And how did you deal with it, and why do you think the car won't deal
with it in a similar fashion?

I knew the route and was expecting the sign. The road was also
steepening and getting curvy. (In case it matters, coming from
Keremeos, BC to the junction of highways 3 and 97 south of Penticton.)

I can not know that the car will have been there before or
otherwise know about it.

Had I not been there before, I might have had an accident. So
could a self-driving car.

I've been in the same situation many times and I can't say that it's
ever been a serious problem. Signs can be covered by snow, obscured by
trees or other vehicles, or the sun can be directly behind the sign,
etc. We all deal with similar situations all the time. Software is being
adapted to do likewise.

We do. We can not rely on what we can not perceive so we take
other factors into account. It is not as safe -- after all, if it
were, the sign would not be necessary -- but we do what we can.

What will a self-driving car do?

Sincerely,

Gene Wirchenko