Confusing traffic light arrangement

Going west on a639, when crossing the rothwell haigh interchange, there are 2 sets of lights. The lights for the a639 exit are easily mistaken as green lights for traffic leaving the roundabout. I have personally driven through red lights here at least 4 times thinking I was green. I have seen other road users (including a highway patrol) make the same mistake. The only reason I have realised this is a mistake is that the crossing traffic lights are also green at the same time.