10.2 Driving at Night
Key Takeaways
- Indiana drivers must use headlights between sunset and sunrise and at any other time visibility is less than 500 feet.
- When headlights are on, use lower beams when approaching within 500 feet of an oncoming vehicle or when following within 200 feet of the rear of another vehicle.
- To avoid glare, do not look directly into oncoming headlights; focus on the right side of the road.
- Pedestrians, road markings, and other vehicles are harder to identify at night, so reduce normal speed, especially on unfamiliar roads.
- Drivers are more likely to be fatigued at night and face a higher accident risk; be prepared to stop driving if you are drowsy — the full drowsiness signs sit with impaired driving.
10.2 Driving at Night
Quick Answer: Driving at night is harder, and drivers are more likely to be fatigued with a higher risk of accidents. Be prepared to stop driving if you are drowsy (the full sign list sits with impaired driving). Pedestrians, road markings, and other vehicles are more difficult to identify. Reduce normal speed, especially on unfamiliar roads. To avoid glare, do not look directly into the lights of an approaching vehicle; focus on the right side of the road. Drivers must use headlights between sunset and sunrise and at any other time visibility is less than 500 feet. When headlights are on, lower beams must be used when approaching within 500 feet of an oncoming vehicle or when following within 200 feet of the rear of another vehicle.
Night driving sits in Indiana Driver's Manual Chapter 7. The knowledge exam's traffic maneuvers and rules component will mix the sunset-to-sunrise rule with the 500-foot visibility rule, then swap the 500-foot oncoming dimming distance with the 200-foot following distance. Those three numbers — 500, 500, and 200 — are the core of this section. Glare control (look right, not into the lamps) is the fourth tested habit.
This section does not replace the impaired-driving chapter. Page 45 of the manual lists drowsy-driving signs (yawning, missing exits, head nodding, hitting rumble strips, and the rest). Learn the night rule here: if you are drowsy, stop driving. The sign list and the 18-hour / .08 BAC comparison belong with impairment.
Fatigue and crash risk at night
Driving at night presents problems that get worse if you do not have experience driving at night or in dangerous conditions. Drivers are more likely to be fatigued while driving at night and may have a higher risk of accidents. Be prepared to stop driving if you experience any signs of drowsiness listed on manual page 45.
Night does not create a special "I will be fine until sunrise" exception. The same brain that nods at a stop light at 2 a.m. is the brain that misses a pedestrian in dark clothing. If you cannot stay alert, pull off to a safe area and stop. Do not bargain with one more exit, one more county line, or a louder radio. The next chapter covers how to prevent drowsy driving (sleep, a short nap, a well-rested driver). This chapter's night duty is simpler: recognize that night raises fatigue and crash risk, and be ready to stop.
Visibility: people, paint, and other vehicles
Pedestrians, road markings, and other vehicles are more difficult to identify and recognize at night. Dark clothing, faded lane lines, a bicycle without a light, and a vehicle with one headlamp all hide in the same gloom. Under nighttime driving conditions, you should reduce normal speed, especially on unfamiliar roads.
"Normal speed" is the speed you would have used in daylight on that same road — including a posted limit that felt comfortable at noon. At night, especially on a county road you have not driven, that number is too fast for what you can actually identify. Unfamiliar roads hide driveways, animals, unlit intersections, and pedestrians walking facing traffic. Slowing is the visibility rule, not an optional courtesy.
Headlights show you a cone of pavement. Everything outside that cone — a child stepping off a dark curb, a stopped car with failed lamps, a faded stop line — arrives late. Reducing speed buys the time the missing daylight used to give you.
Glare: do not look into the lights
The glare of oncoming headlights may also reduce vision. To avoid glare, do not look directly into the lights of an approaching vehicle, and instead focus on the right side of the road.
Looking into the lamps is the instinct that blinds you. The recovery after that stare is several seconds of seeing almost nothing — enough time to leave your lane or miss a pedestrian on the shoulder. The manual's fix is a specific aim point: the right side of the road, which is your edge line, shoulder, or the right-hand pavement, not the oncoming grille.
Do not "punish" the other driver with high beams because their lights annoy you. The lower-beam rule below is the legal answer to oncoming glare. Your eyes go right. Your beams go low when the other vehicle is within 500 feet.
If a driver behind you has high beams in your mirror, the same idea applies: do not stare at the mirror. Use the night-visibility playbook — slower speed, right-side reference, and legal low beams of your own.
Headlights: sunset to sunrise, and visibility under 500 feet
Drivers must use headlights between sunset and sunrise as well as at any other time in which visibility is less than 500 feet.
That sentence is two independent triggers. Either one turns the lamps on:
- Clock and sun: sunset to sunrise. You do not wait until "full dark." Dusk is already inside the rule.
- Distance you can see: any other time visibility is less than 500 feet. Rain, snow, smoke, fog, and heavy spray can hit that limit at noon. The weather section already told you to use headlights to be seen in rain, snow, and fog. This section adds the legal distance: if you cannot see 500 feet, the headlights must be on, even in daytime.
| Trigger | Headlights |
|---|---|
| Sunset to sunrise | Must be on |
| Visibility less than 500 feet (any time) | Must be on |
| Daytime with more than 500 feet of visibility and no weather duty to be seen | Not this night-driving mandate |
Do not invent a 200-foot visibility trigger. 200 feet is the following dimming distance, not the "when to turn lights on" distance. Do not invent a city-only or rural-only version. Sunset-to-sunrise and under-500-feet visibility apply wherever you are driving in Indiana.
Lower beams: 500 feet oncoming, 200 feet following
When headlights are on, lower headlight beams must be used when approaching within 500 feet of an oncoming vehicle or when following within 200 feet of the rear of another vehicle.
Two situations, two distances, same duty: low beams.
| Other vehicle | Distance | Beam |
|---|---|---|
| Oncoming | Within 500 feet | Lower beams |
| Following (you are behind) | Within 200 feet of that vehicle's rear | Lower beams |
High beams are for an empty, dark road when no one is close enough to be blinded. The moment an oncoming car is inside 500 feet, or you have closed to 200 feet behind someone, you must drop to low beams.
Exam writers love to reverse the numbers. 500 is oncoming. 200 is following. 500 is also the visibility trigger that turns headlights on. Write them as a set:
- Lights on: sunset–sunrise or see less than 500 feet.
- Lights low for traffic: 500 feet toward you, 200 feet ahead of you.
Following too closely with high beams is not "so I can see around them." It is illegal inside 200 feet, and it is the glare that the lead driver cannot escape by looking to the right side of the road.
Indiana scenarios
Sunset on I-70. The sun is down. Headlights must be on. You do not wait for streetlights or for "real night."
Daytime snow squall. You can see less than 500 feet. Headlights must be on, even though it is 2 p.m. That matches the weather chapter's "use headlights to be seen" duty.
Two-lane county road, oncoming pickup. The other vehicle is inside 500 feet. You drop to low beams. You do not look into those lamps. You focus on the right side of the road — the white edge line or the shoulder — until the vehicle is past.
Following a sedan on US 31. You have closed to 200 feet. High beams are illegal. You use lower beams and, because it is night on a stretch you do not know well, you reduce normal speed.
Unlit Indianapolis side street. A pedestrian in dark clothing is harder to identify. You are already on headlights from sunset, you are on low beams if anyone is within the 500/200 envelope, and you are slower than your daylight pace.
Drowsy after a late shift. You yawn, miss a sign, or feel your head drop — those signs live in the impairment chapter. The night-driving instruction is: be prepared to stop driving. A safe pull-off beats "one more town."
Exam traps
- Turning headlights on only after "full dark" instead of sunset to sunrise.
- Using 200 feet as the visibility trigger that turns lights on (the on-trigger is 500 feet of visibility).
- Reversing the dimming distances: 500 feet oncoming and 200 feet following, not the other way around.
- Leaving high beams on because "the other driver has them on too."
- Looking directly into oncoming headlights instead of the right side of the road.
- Holding daylight speed on an unfamiliar night road.
- Treating night fatigue as something you can outlast; be prepared to stop driving if drowsy.
- Confusing this section's lighting distances with following-distance seconds from the braking chapter.
Headlights from sunset to sunrise and whenever you see less than 500 feet; low beams at 500 feet oncoming and 200 feet following; look right to beat glare; slow down; stop if you are drowsy.
When must Indiana drivers use headlights?
To avoid glare from oncoming headlights at night, the Indiana Driver's Manual says you should:
When headlights are on, Indiana drivers must use lower beams when: