ARLOJI Martalena showed the way at 4pm. His face seemed sour as he thought about the journey from a department building in Medan Merdeka towards his home in Kebayoran Baru, South Jakarta. He imagined the vehicle exhaust smoke and clamorous klaxons. "If there's a traffic jam, it can take one and a half hours. If there's none, then it takes less than half an hour," he said.

Jakarta roads are certainly becoming more and more crowded. Last year, the Popul