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> An urban street that is currently 2+2 lanes could be used as 4+1 in the morning and 1+4 in the evening if that is what traffic requires. No need for self dri

• dragonwriter 13y ago
  > No need for self driving cars to do this… 100% self-driving cars may reduce the marginal infrastructure costs of enabling this conversion, thus making it economical to do on more of the roads where it might be useful; its done now in some places, but its usually limited to the very worst bottlenecks because the cost of doing it safely (usually involving retractable dividers and lots of signage and other signalling systems.)