1.   There are two narrow bridges, both on bends, and many other blind corners where pedestrians cannot step off the carriageway to avoid oncoming vehicles.

2.   Assuming that even drivers distracted on their cellular telephones will stop, the engineers say, pedestrians too often step into traffic without looking.

3.   In the narrow business district, pedestrians stepped lightly and traffic moved at Sunday speed.

4.   Los Angeles is experimenting with similar flashing signs, to be activated with microwave technology when a pedestrian steps into the crosswalk.