Chapter 6: Navigating the Roads

Knowing how to properly navigate through intersections, execute turns, and pass other vehicles is the essence of daily driving. These rules of interaction prevent chaos and are among the most important for avoiding collisions. The driver’s license exam heavily tests these concepts—especially right-of-way scenarios—to ensure every driver understands the predictable patterns that keep traffic moving safely.

Navigating public roads requires a shared understanding of who has the right to proceed and how to perform common maneuvers like turning and passing. Missouri’s traffic laws provide a clear set of rules for these situations. The fundamental principle is that traffic rules are designed to be predictable and prevent conflict. A driver’s primary duty is to operate their vehicle safely and yield the right-of-way when required to avoid a crash, regardless of the circumstances.

Right-of-Way

The concept of right-of-way is not about having the right to go, but rather about knowing who must yield (give way) to another road user. The law does not give anyone the right-of-way; it only states who must yield it.

• Uncontrolled Intersections: At an intersection with no signs or signals, the driver on the left must yield to the driver on the right if they arrive at approximately the same time. A driver should always slow down and be prepared to stop at such intersections.
• All-Way Stops: At a four-way stop, the first vehicle to arrive and come to a complete stop is the first to proceed. If two or more vehicles stop at the same time, the driver on the left must yield to the driver on the right. A driver turning left must also yield to opposing traffic that is proceeding straight.
• Entering a Roadway: Drivers entering a road from a private driveway, alley, or the side of the road must yield to all vehicles already on the main roadway.
• Merging: When merging onto a highway from an on-ramp, a driver must yield to the traffic already on the highway.
• Pedestrians: Drivers must yield to pedestrians who are in a marked or unmarked crosswalk. When turning at an intersection, a driver must yield to any pedestrians crossing the street they are turning onto.
• Emergency Vehicles: Upon the approach of an emergency vehicle using a siren and flashing lights (red or blue), all drivers must immediately pull over to the right edge of the road, clear of any intersection, and stop. Drivers must remain stopped until the emergency vehicle has passed.
• Stationary Emergency Vehicles (Move Over Law): When approaching a stationary emergency vehicle on the side of the road with its lights activated, drivers must proceed with caution. If on a multi-lane roadway, the driver must change to a lane that is not adjacent to the emergency vehicle, if it is safe to do so. If changing lanes is unsafe or impossible, the driver must reduce their speed.

Common Mistake:
Many drivers at a four-way stop proceed out of turn or based on who they think should go. The rule is simple and strict: first to stop is first to go. If there is any doubt, a hand wave can clarify intentions, but the driver on the right has the legal right-of-way if arrival is simultaneous.