Olympics Test Limits of London Commuters' Patience.

LONDON -- Londoners, forced to navigate a vast city using one of the largest and oldest public transit systems in the world and a road network first laid out by the Romans, are not noted for suffering transportation woes in silence. But the everyday grumbling here sharpened Wednesday as the restrictions and increased demands of the Olympic Games began to bite. London has spent more than $9 billion on refurbishing its creaking transportation infrastructure -- parts of its underground train network date from 1863 -- in time for the Games. The road and rail system will face a million trips a day in addition to the usual 3.5 million when the Games begin Friday, transportation officials warned in a news conference on Tuesday. [ABSTRACT FROM AUTHOR]