combined level crossing flashing lights and traffic lights

[onestrangeday]

Hi Signalling Engineer:

Recently, I am just reading the "introduction to railway signalling" book the part that describing the level crossing and I remembered I have seen the photo of combined flashing lights and traffic lights on the same post that someone has showed me before. Since I am not familiar with combined installation, I have questions such as

1. is the driver be more likely to obey the flashing lights or the traffic lights (personally, I think the driver would be more likely to obey the flashing light since it 'flashes' and attract the driver attention) I'm not sure whether I am right for this ?

2. is there any human factors behind this ? and how can a signal design engineer take this into the level crossing design ?





thanks