View Single Post
Old 12-13-2018, 02:57 PM   #15 (permalink)
redpoint5
EcoModding Newb
 
redpoint5's Avatar
 
Join Date: Aug 2010
Location: Oregon
Posts: 7,959

Acura TSX - '06 Acura TSX
90 day: 26.38 mpg (US)

Lafawnda - '01 Honda CBR600 F4i
90 day: 47.32 mpg (US)

Big Yeller - '98 Dodge Ram 2500 base
90 day: 21.82 mpg (US)

Prius Plug-in - '12 Toyota Prius Plug-in
90 day: 57.64 mpg (US)

Mazda CX-5 - '17 Mazda CX-5 Touring
90 day: 28.47 mpg (US)
Thanks: 2,630
Thanked 3,126 Times in 2,327 Posts
Longer wavelengths (low frequency) transmit further, and through more objects, but support lower data rates. Shorter wavelengths (high frequency) transmit shorter distances and have less object penetration.

Long range isn't desirable because only 1 conversation can take place on a frequency at a time. That's the idea behind "cellular" towers. They have short range so that other conversations can be made on the same frequency not too far away.

The pertinent data a vehicle needs to communicate to others is small. It needs to transmit position, and intended course and speed; a vector. Other stuff too, but the data is still minimal.

Communication with other vehicles is a relatively minor technical consideration compared with the vastly difficult task of dealing with a dynamic environment and accurately interpreting sensor inputs into actionable or ignorable responses.
__________________
Gas and Electric Vehicle Cost of Ownership Calculator







Give me absolute safety, or give me death!
  Reply With Quote
The Following 2 Users Say Thank You to redpoint5 For This Useful Post:
freebeard (12-17-2018), wdb (12-24-2018)