The station is also noted as being one of only two stations on the TTC where a signal light is publicly accessible (the other being Islington Station). The signal is located on the east end of the platform. It is an Interlocking Signal that guards the crossover to the northbound Yonge Line and is only used during service disruptions that require trains be turned at Union.
North side entrances:
Street level stairs on North side of Front Street.