Bicycles are not allowed on RET busses and trams. You are allowed to take your bicycle on subway lines A, B, C, D and E, but not during peak hours; your bicycle is not allowed on the subway on weekdays, before 09.00 and between 16.00 en 18.30.
You do not need to pay a surcharge or buy a special ticket to take your bicycle on the subway. Taking your bicycle on the subway is only allowed by walking it. RET will not be liable for any damages caused to your bicycle by taking it on the subway. Use the pre-determined spaces to store your bicycle while riding the subway.