When they think the next card or cards will be advantageous, they up their bets. For those unfamiliar with the concept, card counting is a strategy that gives blackjack players the ability to anticipate what cards are left in the deck. In the early 1980s, truck driver John Breeding was thinking about a newspaper article regarding card counting in blackjack.
Truck drivers have a lot of time to think when they are on the road.
