Final answer:
In general traffic rules, the vehicle going straight in an intersection has the right-of-way over a vehicle turning left. However, drivers must always follow local traffic laws and signals that might modify usual right-of-way practices.
Step-by-step explanation:
When two vehicles enter an intersection at the same time, the vehicle going straight generally has the right-of-way over the vehicle turning left. This rule helps maintain a safe and orderly flow of traffic within the intersection. In the instance where a car is traveling east toward an intersection while a truck travels south toward the same intersection, if the car is turning left and the truck is proceeding straight, then the truck would have the right-of-way. However, all drivers should be attentive to local traffic laws and any specific signals or signs that may alter typical right-of-way rules, such as traffic lights or dedicated turning phases.