3 ptsPTOfficial number: 6962
Does this sign prohibit you from entering the rail switch until it is unblocked?

Explanation
Correct answer: No
The SB "Points Lock" signal informs the tram driver that the points are locked and set for a specific direction of travel. This is an informational signal, not a prohibitory one. Passage is therefore possible if the points setting is consistent with the intended direction of travel.