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"Building one space station for everyone was and is insane: we should have built a dozen."
- Larry Niven

Controlway  
  An automated highway system that takes full operational control of vehicles traveling upon it.  

The car slid up the ramp, waited until the traffic control signaled a predicted break in traffic, then joined the high-speed northbound stream. Mary Risling settled back for a little nap...

She woke just before the signal from the car which would have called her... She signaled the traffic control ahead; it cut her out of the stream of vehicles and reduced the speed of her car, then rang the alarm which notified her to resume local control. Before doing so she fumbled in the storage compartment on the instrument board and fumbled, apparently purposelessly.

But the registration number which the traffic control automatically photographed as she left the controlway was not the number in which the car was registered.

From Methuselah's Children, by Robert Heinlein.
Published by Astounding Science-Fiction in 1941
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  More Ideas and Technology from Methuselah's Children
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Controlway-related news articles:
  - Heinlein Controlways Predicted By Kiwi Profs

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