Planning your sightseeing trips in advance can save you headaches on the road. RELATED LINKS Back to Maui City Guide

In recent years, bourgeoning tourism development and population growth have overwhelmed Maui's limited network of roadways, so it's not unusual for visitors and residents alike to find themselves stuck in bumper-to-bumper traffic. Tie-ups happen almost daily on major arteries leading to and through the principal resort areas along the leeward coast, and all it takes is one accident or a minor construction project to leave parts of the island gridlocked for hours.

One way to avoid jams is to hunker down in a beach resort and forget about sightseeing, but if you do plan to go holo holo (Hawaiian for day-tripping), try to avoid the more congested areas during morning and afternoon commute times. It's also a good idea to ask the car rental agency or your hotel's staff about road maintenance projects or special events that are likely to cause traffic problems. If you do get stuck in a major jam, consider turning off the main road in search of a nearby beach, park or café where you can savor an impromptu slice of island life while waiting for the traffic to clear.

While behind the wheel, remember that locals typically frown upon angry honking or other signs of automotive disrespect. In the spirit of aloha, it never hurts to cede the right of way even when you're not technically obliged to do so. Also bear in mind that many of the cars on the road are piloted by disoriented tourists whose attention may easily be diverted by a pretty view or a whale spouting offshore. Drive defensively at all times.

A word about break-ins: Theft from rental cars left in beach parking lots and other remote areas is common on Maui, so never leave any valuables in the car. And if you do encounter a smashed window or broken lock, don't let it ruin your vacation — it's only a rental, after all.