Answer:
left, center, right, left again.
Explanation:
Generally, in accordance with the highway traffic laws and regulations, it is important and necessary that when entering an intersection even with a green traffic light signal, all drivers should check left, center, right, then left again so as to do a confirmation that there isn't any danger from oncoming vehicles or anyone else. If this is strictly adhered to by road users such as drivers, there would be a great reduction in the number of road crashes or accidents.
In a nutshell, before entering an intersection, the safest searching process is to search left, center, right, then left again.
