The exam asks whether you may enter this street: no, it is a one-way street and you are at the wrong end. At the other end stands C3 or C4. Trap: a cyclist may sometimes enter when a plate says 'except cyclists'. Second trap: on such a road you may park on the left, because there is no oncoming traffic.
Trap
Reading C1 and C2 as the same closure.
C1 closes BOTH directions; C2 closes only this direction of a one-way road.
Exam question on this sign
You are cycling through Deventer. At the end of a narrow street two round red signs with a white bar (C2) stand on both sides of the entrance, without an additional plate. In the street cars are coming towards you. What do you do?
You do not cycle in; this end is closed to cyclists too
You cycle in as soon as the oncoming traffic has passed
You cycle in, because a sign like that is only meant for cars
Show the answer
Correct answer: You do not cycle in; this end is closed to cyclists too
False — you read this sign as a narrow passage where you only give way. The round red sign with a white bar means: no entry from this side; the street is a one-way road you may only enter from the other end.
Why learners get this wrong: Sign C2 (red disc, white bar) regulates a narrow passage: you may enter once you have given way to oncoming traffic.