On Fri, 23 Jan 2015 15:41:10 -0500, Dave Smith
> wrote:

>On 2015-01-23 2:12 PM, wrote:
>
>>> I *always* know when a car just pulled into my driveway or drove past on
>>> the street. There isn't much traffic here.
>>
>> I can hear a car coming towards my place 2 or 3 minutes beforehand,
>> and on a good day when the sound is really travelling - sometimes
>> double that time.
>>
>
>
>When I was a teen I used to spend a lot of time at my friend's farm. It
>was located an a two lane highway 50 mph posted speed. At night there
>was only one car every 10-15 minutes, but the sound of them coming and
>going was almost constant because the sound travelled so far.

The middle of winter seems to be the best time for sound to travel.
There's a small waterfall several KM away from me, and sometimes I can
hear it from my verandah.