Final answer:
The legal exception to turn left on a red light in Massachusetts is onto a one-way street. Traffic laws are essential for road safety, but in emergencies like with a pregnant woman in labor, laws may be interpreted differently. Traffic signals are crucial for controlling speed at intersections.
Step-by-step explanation:
In Massachusetts, it is against the law to make a left turn on a red light except when turning onto a one-way street. This means that the correct answer to the question would be option a) Onto a one-way street. It is important for drivers to adhere to traffic laws to maintain safety on the road.
In emergency situations, such as when a pregnant woman is in the vehicle and in labor, the usual traffic laws may be interpreted differently, potentially allowing a driver to proceed with caution against a red light if no other option is available and it is necessary to prevent greater harm. It is also essential to consider implementing traffic signals to control vehicle speed and enhance road safety at intersections where vehicles tend to speed through without regarding the posted speed limits.