Bicycles and Specified Small Motorized Bicycles Only
特定小型原動機付自転車・自転車専用(とくていこがたげんどうきつきじてんしゃ・じてんしゃせんよう)
Meaning
A sign indicating a road exclusively for specified small motorized bicycles (特定小型原動機付自転車) and bicycles. Pedestrians and other vehicles may not use it.
Common mistake on the test
Pedestrians may not use it (unlike 'Bicycles and Pedestrians Only'). It is the blue bicycles-only sign.