Exit-Only Lane and a TO Route Sign
You are southbound on a three-lane Connecticut interstate at 65 mph. An overhead sign structure reads: left lane, I-84 EAST BOSTON with an EXIT ONLY panel; center and right lanes, I-91 SOUTH NEW HAVEN. You are in the center lane, and you want I-84 East. A tractor-trailer is alongside you in the right lane, and a car is 30 feet behind you. The left lane begins to separate from the mainline in 800 feet, and a solid white line starts in 300 feet. Just past the sign, a smaller white sign reads TO CT-15, and a blue service sign shows gas, food, and lodging at the next exit.
1. When and how should you change lanes, and what do the EXIT ONLY panel and the solid white line mean?
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You should change lanes now, while the left lane is still a normal lane and before the solid white line begins. Signal, check the mirror and blind spot, and move left smoothly without cutting off the car behind you. Do not accelerate hard simply because the lane is ending; match speed and let the lane change be predictable.
The EXIT ONLY panel means the left lane will leave the mainline for I-84 East. It is not a through lane for I-91 South. If you stay in the center lane, you will continue on I-91. The solid white line is a lane-change discouragement; crossing it late is unsafe and may be a violation, and the gore area beyond it is not a driving surface. The exam is testing the timing: the decision point is at the sign, not at the gore. A driver who waits until the last 100 feet creates a conflict with traffic already established in the exit lane.
2. If you miss the split, what should you do, and why is the gore area not an option?
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If you miss the split, continue on I-91 South to the next exit, get off, and re-route back to I-84 East. That may cost time, but it keeps you in a legal and predictable traffic flow. Do not reverse, do not stop in the through lane, and do not cut across the gore or the solid white line to reach the exit.
The gore area is the striped triangle between the diverging lanes. It is not a lane, it has no protected space for a vehicle, and crossing it puts you in conflict with traffic in both the through lanes and the exit lane. It may also have attenuators, signs, or guardrail. A missed exit is a routing problem, not an emergency. The correct judgment is to accept the delay and take the next legal opportunity. Exam questions often reward the answer that refuses to improvise at a gore even when the driver is frustrated.
3. What does the TO CT-15 sign mean compared with a CT-15 route marker, and what does the blue service sign promise?
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A TO CT-15 sign means CT-15 is reached by following this route or direction; you are not yet on CT-15. A CT-15 route marker, by contrast, identifies the road you are actually on. The distinction matters for navigation: if you want CT-15, the TO sign tells you which way to go, but it does not mean the current interstate has become CT-15. A route marker is a confirmation; a TO sign is a directional instruction.
The blue service sign is informational. It tells you that gas, food, and lodging are available at or near the next exit. It does not guarantee that every business is open, that the exit is unobstructed, or that the services are immediately at the ramp. You still have to read the exit sign and make a safe lane change. Guide signs help you plan, but they do not override regulatory signs, pavement markings, or the need to keep scanning for changing conditions.