Virginia Speed Limits by Road, Vehicle and Zone

The default Virginia speed limit is 55 mph on interstates, limited-access divided highways, four-lane highways and all state primary highways, under Va. Code § 46.2-870. It is 70 mph where signs say so, 25 mph in a business or residence district, and 45 mph for trucks on the remaining highways. Above 85 mph, the limit stops mattering.

Virginia speed limits by road type

Section 46.2-870 sets the statewide maximums; the higher numbers apply only where signs have been erected after a traffic engineering study and analysis of crash and law-enforcement data.

Road	Maximum speed limit	Condition
Interstates, multilane divided limited-access highways, physically separated HOV lanes	70 mph	Only where lawfully posted after a traffic engineering study
Certain nonlimited-access multilane divided highways — US 17, 23, 29, 58 and Alternate 58, 301, 360, 460, 501 between the Town of South Boston and the North Carolina line, State Routes 3 and 207	60 mph	Only where lawfully posted after a traffic engineering study
Interstates and other limited-access divided highways, nonlimited-access highways with four or more lanes, all state primary highways	55 mph	The statutory default
All other highways — passenger cars, buses, pickup or panel trucks, motorcycles	55 mph	The statutory default
All other highways — trucks, tractor trucks, property-carrying combinations, vehicles towing a self-propelled vehicle or house trailer	45 mph	The statutory default for those vehicles
Business or residence districts	25 mph	Va. Code § 46.2-874, except on interstates, limited-access divided highways, four-lane nonlimited-access highways and state primaries, where signs posted before 1 July 2005 stand until lawfully changed

The vehicle line is the one drivers of rental trucks and trailers miss: on a two-lane secondary road, a car may do 55 mph while a vehicle towing a house trailer may not exceed 45 mph, and the reckless driving threshold for that driver is measured from 45.

What is the speed limit on an unmarked road in Virginia?

Where there is no sign, the statute supplies the number. On a state primary or a highway with four or more lanes it is 55 mph; on other highways it is 55 mph for a passenger vehicle and 45 mph for a property-carrying truck or a vehicle towing a trailer; inside a business or residence district it is 25 mph. An absent sign is not a defence to speeding — it simply means the default applies.

The reverse situation is the one to look for on a summons. Where a limit has been changed and posted, the posted number is the one the case is measured against, so whether the sign was lawfully in place is occasionally worth checking.

Who can change a Virginia speed limit

Va. Code § 46.2-878 gives the Commissioner of Highways, or whatever authority has jurisdiction over the highway, power to decrease the limits in § 46.2-870 and to increase or decrease the zone limits that follow it, and to set different daytime and nighttime limits. Four conditions come with it:

1. A change is effective only after a traffic engineering investigation and only when indicated on the highway by signs.
2. Changes on highways under the Commissioner of Highways must be prescribed in writing and kept on file at the Department of Transportation’s central office.
3. Where a limit has been changed and properly posted, there is a rebuttable presumption that the change was properly established — so the driver, not the Commonwealth, carries the argument that a sign was unlawful.
4. Since 2024, VDOT must notify the locality (and, in a community with a property owners’ or condominium association, its board) of the location, date, new limit and reason for a change. Failure to give that notice does not undo the change.

One narrow exception sits in subsection B: the governing body of a town located entirely within a United States military base may reduce a limit below 25 mph by ordinance where signs say so.

Zones with their own limits and their own penalties

Three kinds of zone carry a stiffer price rather than a different rulebook.

• Posted residence districts. Va. Code § 46.2-878.2 makes exceeding a residence-district limit a traffic infraction punishable by a fine of $200 in addition to other penalties, where signs display both the limit and the penalty. No part of that fine may be suspended unless the court orders 20 hours of community service. The prepayable rate in such a district is $8 per mile per hour on top of the $200.
• School crossing zones. The limit drops to 25 mph while the zone’s portable, tilt-over or blinking signs are in position or lit, and the prepayable fine rises to $7 per mile per hour.
• Highway work zones. A work-zone limit is enforceable where the zone is signed and workers are present, and the prepayable rate is likewise $7 per mile per hour.

The limit is not a safe harbour

Va. Code § 46.2-861 is one sentence long and it catches drivers who were doing nothing wrong by the numbers: “A person shall be guilty of reckless driving who exceeds a reasonable speed under the circumstances and traffic conditions existing at the time, regardless of any posted speed limit.”

That is a misdemeanor charge, not a ticket, and it is the section written after a crash in fog, on ice, in standing water or in stopped traffic where the driver was under the posted limit. The posted number is a ceiling, never a guarantee that a speed was lawful.

What exceeding a Virginia speed limit costs

Below the criminal threshold, the price is arithmetic. Va. Code § 46.2-878.3 sets the prepayable fine at $6 per mile-per-hour over the posted limit, $7 in school crossing and highway work zones and $8 in posted residence districts, with an extra $100 for driving faster than 80 mph but below 86 mph where the limit is 65 mph. Va. Code § 16.1-69.48:1 adds fixed court costs of $51 on a traffic infraction and $61 on a misdemeanor.

The DMV adds 3 demerit points where the overage is 1 to 9 mph, 4 points for 10 to 19 and 6 points at 20 or more. The full worked totals are on the fine and the fixed court fee, one charge is priced end to end under how much a 15 over ticket costs, and the summons itself — prepaying it, the court date, the appeal — is covered under the summons, the court date and the appeal.

Where the speed limit stops mattering: 85 mph

Va. Code § 46.2-862 makes it reckless driving to drive 20 mph or more in excess of the applicable maximum speed limit or in excess of 85 mph regardless of the applicable maximum speed limit. The second clause is absolute: 86 mph is a criminal charge on a road posted at 70 just as it is on one posted at 55.

Posted limit	Speeding infraction	Reckless driving by speed
25 mph	26–44 mph	45 mph and above
35 mph	36–54 mph	55 mph and above
45 mph	46–64 mph	65 mph and above
55 mph	56–74 mph	75 mph and above
65 mph	66–84 mph	85 mph and above (20 mph over, clause (i))
70 mph	71–85 mph	86 mph and above

Reckless driving is a Class 1 misdemeanor, and Va. Code § 18.2-11 sets that at confinement in jail for not more than twelve months and a fine of not more than $2,500, either or both. What that case looks like is set out under how speeding becomes a crime.

How your speed against the limit is measured

Va. Code § 46.2-882 allows a laser device, radar, a microcomputer connected to an odometer cable, an aircraft-borne microcomputer over an interstate, or an authorized photo speed monitoring device, and makes the reading prima facie evidence of the speed. No calibration of a device is valid for longer than six months, except a photo speed monitoring device at 12 months, and a certificate of calibration — including one for the driver’s own speedometer — is admissible as evidence of what it states.

The same section also decides who may use what. State Police officers may use laser devices, radar and the microcomputer devices described in the section. All localities may use radar and laser; only the Cities of Alexandria, Fairfax, Falls Church, Manassas and Manassas Park, the Counties of Arlington, Fairfax, Loudoun and Prince William, and towns within those counties, may use the odometer-cable microcomputer devices. Neither State Police nor local officers may use laser or radar from an airplane or helicopter — aircraft enforcement runs on the timed-distance microcomputer instead, and only over the Interstate System.

Two more procedural rules sit in the same place. An officer may arrest without a warrant where he is in uniform, displays his badge and has observed the device register the speed, or has received an immediate radio message from the officer who did, including the vehicle’s identification and the registered speed. And the Division of Purchases and Supply determines what equipment may be used, with chiefs and sheriffs responsible for ensuring devices meet or exceed its standards.

Checking the posted limit written on the summons against the road, and the device’s calibration date against the statute, is where most honest speeding defences begin; the rest are set out under what is worth contesting. Where the applicable limit itself is genuinely in question, a Virginia traffic attorney who practises in that court is the person to review it.