Leaving Certificate Mathematics Question 10 by Maths Grinds

A student is driven through Dublin and records whether he gets a “red” or “green” light at each set of traffic lights. He records the following outcomes for 10 sets of traffic lights (R represents “red” and G represents “green”): {R, G, R, G, G, G, R, G, G, G}

What is the probability that the next traffic light will be “red”? Is there any problem with how this data was collected?