From BRIAN CURTIS
I too have observed the waves produced when cars begin to move in a
traffic jam, but to me this is analogous to the flow of holes in a p-type
semiconductor. Now if we can find the equivalent of the n-type semiconductor,
it could be inserted in the traffic flow to form the equivalent of a pnp
transistor. This could therefore act as an amplifier, thus speeding up the
traffic.
Could this be the answer to all the traffic problems?
Brian Curtis South Ruislip, Middlesex
