I thought Truvelos were only forward facing in the same way that Gatsos are only rear facing.
Well, that's what I was told by the camera safety team anyways. We seem to have a preference for Truvelos rather than Gatsos in Northamptonshire (which is nice for bikes) but often (mostly in rural areas) there is only one - mounted on one side of the road - that will often be turned found to catch traffic coming the other way on the other side of the road.
Um, kinda...
<< camera
caught speeding>
<not caught
camera>>
not caught >
<caught speeding
Er, does that make any sense?