In the fierce competition for clients, taxi drivers offering cutthroat discounts need to perform multiple tasks. First, they need to react quickly to messages broadcast from an illegal radio system installed on their receivers by their syndicate to pass on passengers' orders. The idea is similar to the question-and-answer game shows on television - whoever presses the 'talk' button and responds first, gets the job. As many as five or six mobile phones can be sitting on the dashboard, which the drivers use to send or take incoming orders and communicate with their clients, such as finding a location and changing a pickup point. Another must-have is a memo pad for writing down the orders. Passengers may have to endure a scary ride if they want to have discounts, as many drivers only serve trips costing more than $50 and tend to lose their patience as a result of regular long-distance drives. Some of them drive exceptionally fast and change lanes while answering calls. Each of the discount fleets can have about 1,000 taxis operating around the city. 'The idea is based on mutual help. If one of us receives an order and cannot take it, he will pass it on to the other members,' said one driver. Even though his passengers were charged 20 per cent less than the taxi-meter bill, he said he could make more as a fleet member. 'Most of the orders we receive cost over $100. I only get $20 deals when I work individually, which could not even cover the taxi rent,' he said, pointing to a long queue of cabs in front of office buildings in Quarry Bay.