Final answer:
When entering traffic from the curb, the last step is to follow traffic rules and signals, including stopping at red lights and observing speed limits. During an emergency, such as transporting a woman in labor, adhering strictly to these rules might be re-evaluated. However, under typical circumstances, all laws must be obeyed for safe driving.
Step-by-step explanation:
The last thing a driver should do when entering traffic from the curb is to ensure that all traffic signals and rules are observed for safe entry into the flow of traffic. While in emergency situations, such as when a pregnant woman in the back seat is about to deliver, and the car is heading to the hospital, a decision might be made to prioritize getting to the hospital over stopping at a red light, especially if it's a time with minimal traffic like 4 am. However, under normal circumstances, it's essential to follow all traffic laws, which includes stopping at red lights, adhering to the posted speed limit, and yielding to emergency vehicles like ambulances by stopping and becoming stationary till they pass by.