Final answer:
To safely prepare for an expressway exit early, plan your route in advance and travel it the day before to ensure accurate time estimates. Aim to arrive at your destination 5-10 minutes before the intended time.
Step-by-step explanation:
To safely prepare for an expressway exit early, you should plan your route in advance. Familiarize yourself with the exact route and travel it the day before to ensure accurate time estimates. It's important to be early rather than late, aiming to arrive at your destination 5-10 minutes before the intended time.