Thanks for reporting Dan. I assume this is a design fault not an operational fault - ie if its just not working properly this should be reported direct to LBRUT; you can report via www.fixmystreet.com. If its a design fault we will add it to our list of issues to bring up with LBRUT when prioritising spend on cycling infrastructure.
Thread
#1012
Traffic Light Sensor
Traffic lights will not change for cyclists when on the sensor (at night).