The trooper took the two tabs and walked to the rear of the patrol car. He slid back a panel to reveal two thin slots in the hull. Martin slid the driver's license into one of the slots, the registration tab into the other. He pressed a button below each slot. Inside the car, a magnetic reader and auto-transmitter "scanned" the magnetic symbols implanted in the tags. The information was fed instantly to Continental Headquarters Records division at Colorado Springs. In fractions of a second, the great computers at Records were comparing the information on the tags with all previous traffic citations issued anywhere in the North American continent in the past forty-five years since the birth of the Patrol. The information from the driver's license and registration tab had been relayed from Beulah via the nearest patrol relay point. The answer came back the same way. Above the license recording slot were two small lights. The first flashed green, "license is in order and valid." The second flashed green as well, "no previous citations." Ben withdrew the tag from the slot. Had the first light come on red, he would have placed the driver under arrest immediately. Had the second light turned amber, it would have indicated a previous minor violation. This, Ben would have noted on the new citation. If the second light had been red, this would have meant either a major previous violation or more than one minor citation. Again, the driver would have been under immediate arrest. The law was mandatory. One big strike and you're out--two foul tips and the same story. And "out" meant just that. Fines, possibly jail or prison sentence and lifetime revocation of driving privileges. Ben flipped the car registration slot to "stand-by" and went back to the teenager's car. Even though they were parked on the service strip of the police emergency lane, out of all traffic, the youngsters stayed in the car. This one point of the law they knew and knew well. Survival chances were dim anytime something went wrong on the high-speed thruways. That little margin of luck vanished once outside the not-too-much-better security of the vehicle body. Martin finished writing and then slipped the driver's license into a pocket worked into the back of the metallic paper foil of the citation blank. He handed the pad into the window to the driver together with a carbon stylus. The boy's lip trembled and he signed the citation with a shaky hand.