A missed exit is not a reason to stop

Japanese expressways are built for steady, one-way traffic. When a navigation instruction comes late, the road branches quickly, or you simply notice your exit too late, it can feel tempting to slow sharply or look for a way back. Do neither. NEXCO, the expressway operator, is clear: never make a U-turn or reverse on the main line or near a tollgate. The safest first decision is simple: keep travelling in the correct direction and take the next interchange.

This is especially important in a rental car, where an unfamiliar right-hand-drive vehicle, left-side traffic and a new navigation system can add pressure. Missing an exit costs time; trying to correct it on the road can create a serious danger. Treat the next interchange as part of the route, not as a failure.

The five-step response

• Stay calm and continue forward. Keep a safe speed, remain in your lane and follow the signs for the next interchange.
• Do not turn around or back up. This applies on the expressway and around toll plazas. A shoulder or a wide-looking area is not a place to correct the mistake.
• Exit at the next interchange. Do not stop on the main line to reset the route.
• Use a staffed general lane. At the exit, go to a general lane and speak to the tollhouse staff before paying.
• Follow the staff member’s instruction. They can explain the safe next step for that interchange and traffic situation.

What ETC users should do

If your rental car is using an ETC card and you have passed the intended exit, NEXCO advises removing the ETC card from the in-vehicle unit before entering a general lane or an ETC/general lane at the next exit. Tell the staff member that you missed your intended interchange before payment is processed. Do not try to solve the toll issue by making an unscheduled turn at the plaza or by reversing toward another lane.

The staff may be able to guide you back toward the intended interchange. That assistance depends on the layout of the interchange, so it is not something to assume in advance. If returning is not possible or you choose to leave elsewhere, the applicable toll is based on the section you actually use. Listen to the on-site instruction rather than relying on a general online tip.

Set the navigation only after you are safely off the main line

Once you have exited and received instructions, park only where parking is permitted, such as a suitable parking space, before checking the map or changing the destination. If another person is travelling with you, ask them to check the navigation while you keep your attention on driving. A missed exit is a useful reminder to review the next interchange well before reaching it, especially where several exits or ramps appear close together.

Before a long drive, enter the destination, confirm the planned exit name and allow extra time for a wrong turn, congestion or a rest break. NEXCO provides traffic information and congestion forecasts, which can help you decide whether an earlier pause or a different route is sensible. Conditions can change, so check official traffic information before setting out rather than making a rushed decision while moving.

Extra care at service and parking areas

The same direction-of-travel rule matters when leaving a service area (SA) or parking area (PA). Follow the exit arrows carefully when rejoining the expressway. Never use internal roads or parking aisles as a shortcut to return toward an entrance you have missed. If you are unsure where the exit leads, stop only in a legal parking place and ask staff or consult the map before moving again.

A calmer way to plan a rental-car day

Build a small time buffer into every intercity itinerary. That buffer makes it easier to continue safely when you miss an exit instead of reacting impulsively. Keep your rental company’s contact details with your documents, know whether the car has an ETC card, and agree with your passengers that the driver does not handle a phone while the vehicle is moving. On Japan’s expressways, the safe recovery is always the same: continue forward, exit at the next interchange, and ask the tollhouse staff for guidance.

Official guidance: NEXCO EAST: missed-exit procedure and NEXCO WEST: road service information.

Set up for a calmer expressway drive

Japan’s expressways make long rental-car journeys practical, but a relaxed plan is more useful than a tight timetable. Before entering, check the navigation destination, estimated toll route, fuel level, weather and any congestion notices. Keep water and essentials within reach, then put the phone away before moving. Japanese rules require every occupant to wear a seat belt, so confirm this before the car joins traffic. If you are travelling with a child under six, use the appropriate child seat arranged with the rental company.

On a two-lane expressway, keep left as your normal position. The right lane is for overtaking; after passing, return safely to the left lane rather than continuing there. Do not use the shoulder or side strip as a driving lane. Signs set the applicable maximum and, where shown, minimum speed. Treat those signs and the current rain, wind, darkness or traffic flow as the conditions that determine a safe speed, not the speed of a vehicle ahead.

Plan rest stops before tiredness decides for you

Look at the route’s service areas (SA) and parking areas (PA) before departure, but do not assume every stop has the same facilities. Official NEXCO route and rest-area tools are the right place to confirm fuel, food, toilets or other current services. JAF also notes that some expressway sections have long gaps without service stations, so refuel early when the gauge is comfortable rather than waiting for a warning light.

A rest stop is not a failure to keep a schedule. It is the safest place to reset attention, use a phone, adjust navigation, change driver or deal with luggage. If your eyes feel heavy, you are repeatedly missing signs, or conversation and scenery are pulling attention away from the road, choose the next safe rest facility. Stretch, drink water, eat if needed and resume only when you feel alert. Never pull onto the shoulder merely to make a call or take a break.

Make lane changes predictable

Expressway traffic moves quickly, so make each change deliberate. Check mirrors, look for a safe gap, signal early and move only when the surrounding traffic allows it. Keep a generous following distance, especially on a wet road, because braking distances can increase. Avoid sudden steering and avoid treating the passing lane as a place to queue. If you see congestion ahead and must slow sharply, use hazard lamps to warn following traffic as recommended by NEXCO.

• Use the left lane as the regular driving lane.
• Use the right lane only to overtake, then return when safe.
• Keep clear of shoulders except in an emergency or under official direction.
• Stop at a designated SA or PA for rest, phone use or navigation changes.

Handle a wrong turn without improvising

Missing an exit is frustrating, especially when a reservation or sunset is ahead. Do not reverse, make a U-turn or stop on the expressway. Continue safely to the next interchange and use the toll-booth interphone or speak with staff if you need guidance. At a toll lane, follow its signs carefully; an ETC lane should be entered slowly and only after the barrier opens. If the barrier does not open, do not back up. Turn on hazard lights and use the interphone.

Good expressway driving is deliberately uneventful. Build in time for breaks, leave lane decisions early, and accept a longer trip if traffic or weather calls for it. With a charged navigation device, enough fuel, seat belts fastened and a willingness to stop at a proper rest area, a rental-car drive becomes a comfortable part of the Japanese journey rather than a race between destinations.

Why tunnels deserve a plan

A tunnel can turn a familiar drive into a visibility challenge in seconds. Bright daylight disappears at the entrance, your eyes need time to adjust, and the road may feel narrower or louder than the approach. For a visitor driving a rental car in Japan, the safest response is not to make a sudden correction inside the tunnel. It is to prepare before the portal, keep the car predictable, and follow the signs already in place.

Japan’s Road Traffic Act requires vehicle lights at night and also at other times prescribed by Cabinet Order. Official expressway guidance tells drivers to use lights in daytime in tunnels, dense fog, and heavy rain when visibility is poor. Treat that as a simple habit: switch on the appropriate lights before entering a tunnel, even if the entrance looks well lit. Your aim is not only to see the road; it is also to help drivers behind and beside you see your car.

Prepare before the entrance

Do the small tasks while you still have daylight and space. Set your navigation destination before moving off, put the phone away, and check that sunglasses will not make the tunnel too dark. If the rental car has automatic lights, learn where the control is at pickup; automatic systems can be helpful, but the driver remains responsible for reading the road and the dashboard.

• Look ahead for the tunnel sign, lane arrows, speed signs, and any electronic message board.
• Turn on low-beam headlights early rather than waiting for your eyes to struggle with the change in light.
• Reduce speed smoothly before the entrance if conditions, traffic, or a posted limit require it; do not brake sharply after crossing the threshold.
• Leave more following distance than you would on an open road, especially on a wet surface.

Keep to the left unless signs or traffic conditions require another lane. On a two-lane expressway, the left lane is the normal driving lane and the right lane is for overtaking. A tunnel is a poor place to make an unplanned lane change, so choose your lane early and use indicators before any necessary move.

Keep every movement calm inside

Once inside, keep a steady line and scan far ahead rather than staring at the tunnel wall or the bumper in front. Tunnel lighting can create reflections on the windscreen, and wet pavement can make them stronger. Keep both hands ready for small steering inputs and avoid sudden acceleration, braking, or lane changes. If traffic slows, increase your gap rather than trying to regain time.

Do not use a handheld phone, change navigation settings, or search for a camera setting while driving. Japan’s road rules prohibit distracted mobile-phone use, and a tunnel gives you fewer safe margins for attention to drift. If you need to check a route or the rental agreement, wait until a lawful, safe stopping place such as a service area or other designated facility.

Exit with the same attention

The bright rectangle at the end of a tunnel can make the exit look closer than it is. Keep your lights on until you have fully returned to open-road conditions, hold your lane, and give your eyes a moment to adjust. Wind, rain, or a sharp curve may begin immediately after the portal. Check the next sign before changing speed or route, then continue at a speed suitable for the posted limit and the actual conditions.

If something goes wrong

Never turn around or reverse inside a tunnel. If a warning light appears, a tire problem is suspected, or the car cannot continue normally, follow the posted tunnel instructions and move only when it is safe to do so. Use hazard lights to warn following traffic. On a Japanese expressway, official guidance says to alert others, evacuate to a safe place such as outside a guardrail when possible, and avoid remaining on the traffic lane. Tunnel emergency signs, phones, and staff instructions take priority because equipment and evacuation layouts vary by location.

A calm tunnel drive starts before the entrance. Lights on, speed managed, space ahead, phone away: those four habits make a rental-car journey in Japan easier for you and more predictable for everyone around you. For the wider rules that apply to visitors, review the Japan Automobile Federation’s driving guidance before departure.