Virginia Following-Distance & Headlight Rules
How far back to follow another vehicle, when to dim high beams for oncoming and following traffic, and the move-over law for emergency vehicles.
- Following-distance rule
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Virginia teaches a two-, three-, four-second rule that scales with speed: at least 2 seconds under 35 MPH, 3 seconds from 35 to 45 MPH, and 4 seconds from 46 to 70 MPH. To measure it, watch the vehicle ahead pass a fixed object (an overpass, sign, fence, or pavement mark), then count the seconds until your front bumper reaches the same spot. If you arrive before the count is up for your speed band, you are following too closely; slow down and open up. Add seconds for bad weather, heavy traffic, poor pavement, a vehicle in poor condition, when you are behind a large vehicle that blocks your view, behind a motorcycle or bicycle, while exiting an expressway, or when you are being tailgated. The manual notes that the published cushions assume you are not exceeding 70 MPH.
- Dim high beams within (ft): oncoming
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500
Source: Virginia Driver's Manual, Section 3: Safe Driving, Night Driving, p. 23
- Dim high beams within (ft): following
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200
Source: Virginia Driver's Manual, Section 3: Safe Driving, Night Driving, p. 23
- Headlight requirements
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You must use your headlights in Virginia from sunset to sunrise, and any time inclement weather (rain, fog, snow, or sleet) drops visibility to 500 feet or less. You must also have your headlights on whenever you are using your windshield wipers because of weather. Using headlights at all times, including during daylight, makes your vehicle more visible to other drivers. Use low beams in cities and towns except on unlit streets, switch to low beams within 500 feet of an oncoming vehicle, and switch to low beams when you are within 200 feet of a vehicle you are following. In heavy fog, use low beams only (high beams reflect off the fog) and steer by the road edge markings.
Source: Virginia Driver's Manual, Section 3: Safe Driving, Lights, Night Driving, and Fog, pp. 22-23
- Min following distance behind emergency vehicle (ft)
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500
Source: Virginia Driver's Manual, Section 3: Safe Driving, Yielding to Vehicles with Flashing Lights, p. 16
- Motorcycle following rule
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Never tailgate a motorcycle. Virginia's manual says to add an extra second to the standard following-distance rule when you are behind a motorcycle, and to double that extra cushion in inclement weather. A motorcycle's size makes it easy to misjudge its speed and distance, and a slight road change or debris can be a major obstacle for a rider, so always leave room to react. Anticipate that the rider will use the entire lane as conditions change, never drive beside a motorcycle in the same lane, and check your blind spots for motorcycles before you pull out, change lanes, turn, back up, or proceed through an intersection.
Source: Virginia Driver's Manual, Section 3: Safe Driving, Sharing the Road (Motorcycles), p. 20
- Cyclist safe-passing rule
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Virginia requires motorists to pass cyclists with at least three feet of clearance, measured to the left of the bicycle. If the lane is not wide enough to allow that three-foot clearance, you must change lanes to pass safely; using a marked bicycle lane to pass is prohibited. When approaching or passing a person on a bicycle, moped, or power-assisted bicycle, reduce your speed and give plenty of room. The same three-foot clearance rule applies when passing a horse-drawn buggy. On roads with a center lane marked by a broken yellow line beside a solid yellow line, the driver on the solid-line side may cross only to pass pedestrians, bicyclists, and riders of scooters or skateboards, when the opposite lane is clear and the pass can be made safely.
- Passing a stopped vehicle with flashing or hazard lights
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On a highway with at least four lanes and at least two going your way, you must change into a lane not next to any stopped vehicle showing flashing blue, red, or amber lights, or its hazard flashers, caution signs, or lit flares, whenever that lane change is reasonable and safe. If it is not, slow down, proceed with caution, and hold a safe speed for conditions. Passing a stopped police, fire, rescue, or tow vehicle without doing so is reckless driving. Virginia's move-over duty is in Va. Code 46.2-861.1, split into two tiers. Subsection A covers a stationary vehicle displaying flashing, blinking, or alternating blue, red, or amber lights authorized by 46.2-1022, 46.2-1023, 46.2-1024, or 46.2-1026 B, that is, law-enforcement, fire, rescue and emergency medical vehicles and public utility vehicles repairing or maintaining electric or natural gas service. Violating subsection A is RECKLESS DRIVING, a criminal charge, not a simple infraction. Subsection B, added by the 2023 amendments (Acts 2023, cc. 616 and 617), extends the identical driving duty to a stationary vehicle that is displaying amber lights under 46.2-1025 A 1 or A 2 (vehicles principally used to tow or service disabled vehicles, and vehicles constructing, maintaining, or repairing highways or utilities, assisting with roadside and traffic incident management, or performing traffic management services), OR that has activated its vehicular hazard warning signal flashers, OR is displaying caution signs, OR is marked with properly lit flares or torches. That hazard-flasher clause is the key expansion: an ordinary stopped car with its four-ways on is covered. A subsection B violation is a traffic infraction. In both tiers the lane change applies only on a highway of at least four lanes with at least two intended for traffic going your way, and only 'if reasonable, with due regard for safety and traffic conditions'; where changing lanes would be unreasonable or unsafe, the driver must 'proceed with due caution and maintain a safe speed for highway conditions.' Virginia sets NO numeric speed reduction here. Subsection C allows license suspension up to one year if the violation damages property and up to two years if it injures or kills. Subsection D exempts highway work zones as defined in 46.2-878.1, which have their own rules. A separate section, Va. Code 46.2-838, governs passing a stationary REFUSE COLLECTION vehicle: change to a non-adjacent lane on a highway of at least four lanes, and on a smaller road, or when you cannot change lanes, decrease speed to 10 mph below the posted limit and pass at least two feet to the left of the vehicle. That 10-mph-and-two-feet rule is the only number in Virginia's move-over family and it belongs to refuse collection, not to the general rule.
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