Two school students competed against each other in a series of questions to earn points. The questions were divided into three categories based on the colours of traffic lights. The winner participated in a bonus round in which 9 traffic light questions had to be answered to win the star prize.
1st: 8 July - 9 August 1996: 25 Episodes. Were broadcast Summer School Holidays.
2nd: 11–25 August 1996: 15 Episodes. Were broadcast Summer School Holidays.
3rd: 6 January - 30 July 1997: 25 Episodes. Were broadcast weekly on Saturday lunchtime. (Repeats were broadcast later in the year, at 17.10 during on weekdays)
4th: 5 January - 19 December 1998: 26 Episodes. Were broadcast weekly on Saturday lunchtime from January to 31 March then remaining episodes were shown from 22 September. (Repeats broadcast were shown at 17.10 during on weekdays)