A cracked windshield has no checkbox of its own on the federal driver report. Many fleet managers take that gap to mean the glass can stay off the form. That reading is wrong. The minimum parts list in 49 CFR 396.11 never names the windshield glass, yet 396.11 also makes the driver write down any defect that would affect safe operation. A crack that does that becomes a driver vehicle inspection report windshield defect, and the fleet records that follow it run on fixed clocks: repair, certification, the next driver's signature, then retention.
The DVIR Parts List Never Names Windshield Glass
Whether a DVIR does include the windshield starts with the 396.11 list, which covers at least eleven parts and accessories. They are the service brakes with trailer brake connections, the parking brake, the steering mechanism, lighting devices and reflectors, tires, the horn, windshield wipers, rear vision mirrors, coupling devices, wheels and rims, and emergency equipment. Two of the eleven sit at the front glass: the wipers and the mirrors. The glass itself is missing from the list.
That gap is where the myth starts. A driver working down a paper form or an app screen sees wipers and mirrors, checks them, and moves on. The words "at least" matter here. The eleven items are a floor for what the report covers, and the rule adds a wider duty in the very next paragraph.
That wider duty is the defect clause. The report must identify the vehicle. It must also record any defect or deficiency the driver found, or was told about, that would affect safe operation or cause a mechanical breakdown. A crack that would affect safe operation belongs on the report, checkbox or no checkbox. If your form shows only the eleven items, add a windshield glass line, or make sure the open comment field sits where the driver will use it.
Whether a given crack affects safe operation is its own test. The federal windshield condition rule and the out-of-service call are covered in our post on DOT windshield rules for fleet managers. For how glass work on a whole fleet is booked and billed, see the fleet auto glass service page.
How a Cracked Windshield Gets onto the Report
The report is a daily document. Every motor carrier must require its drivers to report. Every driver must write a report at the end of each day's work on each vehicle driven. The only exception in that sentence is equipment tendered by an intermodal equipment provider. A driver who runs two vans in one day writes a report for each van.
The trigger is what the driver found or heard. A crack spotted at the morning walk-around counts. A crack another driver or a dispatcher points out counts too. The clause covers defects "discovered by or reported to the driver." The report must name the vehicle, so the unit number belongs on every glass entry.
The rule also has an off switch. Drivers need not prepare a report when no defect or deficiency is found by them or reported to them. A clean day can mean no paperwork at all. That makes the crack entry the document that starts the chain. If the glass cracks mid-route and nobody writes it down, the carrier has no listed defect to repair and nothing to certify.
For a fleet vehicle inspection, train drivers to describe windshield damage in a way the next person can act on. Note where the crack sits, how long it runs, and whether it reaches the area the wipers sweep. Dash cameras and toll tags on the same glass raise a separate question about where cameras may sit, and that question has its own rules.
Repair, Certify, Then Dispatch Again
Once a crack is on the report, three things have to happen before the unit runs again.
First comes the repair. The carrier or its agent must repair any listed defect likely to affect safe operation. That repair comes before the carrier requires or permits anyone to drive the vehicle. The duty attaches to what is on the report, which is why the reporting habit matters.
Second comes the certification. The carrier or its agent certifies on that same report that the defect was repaired, or that repair is unnecessary. One of those two statements has to be on the report before the vehicle is operated again. A crack judged harmless still needs the "repair unnecessary" certification. A crack that gets a new windshield needs the "repaired" one, and it should go on only after the work is done.
Third, the next driver closes the loop. Under 49 CFR 396.13, a driver must be satisfied the vehicle is in safe operating condition before driving it. The driver also reviews the last report, when one was required, and signs it. That signature confirms two things: the driver reviewed the report, and a certification shows the required repairs were performed.
A windshield adds one timing detail. Bonded glass needs its adhesive to cure before the vehicle moves, and the technician confirms when the unit can be driven. Book the replacement for a window when the truck would sit anyway, such as overnight at the yard. Mobile auto glass service brings the work to where the unit is parked, so the certification can go on the report before the morning driver signs.
Whether a small chip gets repaired or the whole windshield replaced is a call for the fleet and its glass shop; chip repair is a separate service, and we replace glass.
How Long a Driver Vehicle Inspection Report on a Windshield Defect Stays in Fleet Records
Two different clocks run on a glass entry. The short one belongs to the driver report. The long one belongs to the maintenance file.
The DVIR Retention Period: Three Months
The carrier keeps three documents together: the driver report, the certification of repairs, and the certification of the driver's review. All three are kept for three months from the date the written report was prepared. A crack reported on March 3 keeps its paperwork on file into early June, even if the glass was replaced on March 4.
The report may be created and kept in electronic format under 49 CFR 390.32. If your drivers file reports in an app, check that the repair certification and the review signature are stored with the crack entry. They share one retention period, so splitting them across systems makes the three-month file hard to produce.
The Maintenance File: 1 Year, Plus 6 Months After the Unit Leaves
The longer duty comes from 49 CFR 396.3. Every carrier must systematically inspect, repair and maintain the vehicles under its control. Parts and accessories must be in safe and proper operating condition at all times. That includes the ones Part 393 specifies.
Records follow from that duty. A carrier must keep records for each motor vehicle it controls for 30 consecutive days, with private nonbusiness passenger carriers excepted. The record identifies the vehicle by company number if marked, make, serial number and year. It also holds a record of inspection, repairs and maintenance showing their date and nature. A windshield replacement is maintenance of exactly that kind, so the file should show the date and what was done.
Those records stay where the vehicle is housed or maintained. The rule keeps them for 1 year, and for 6 months after the vehicle leaves the carrier's control. The answer to how long glass entries are kept has two parts, then. The driver report and its two certifications stay three months. The maintenance entry stays 1 year, and for 6 months after the unit leaves the carrier's control. Once the report's three months run out, the maintenance entry is the only proof the windshield was replaced.
Which Units the Federal 10,001-Pound Line Reaches
None of these driver vehicle inspection report requirements applies until a vehicle counts as a commercial motor vehicle. In interstate commerce, 49 CFR 390.5 defines one partly by weight. The test covers the weight rating or the actual weight, for a single truck or a combination. The line is 4,536 kg (10,001 pounds) or more, whichever figure is greater. Weight is one branch of that definition, and it is the branch a service fleet checks first. Pickups, vans and box trucks in one fleet can land on both sides of that line, so run the check unit by unit.
Section 396.11 also names three exceptions. Its rules do not apply to a private motor carrier of passengers (nonbusiness), a driveaway-towaway operation, or any motor carrier operating only one commercial motor vehicle. The third exception turns on a count, so a fleet near it needs the unit-by-unit weight check before relying on it.
Those three exceptions are written into 396.11 itself. The 396.3 maintenance duty has its own text, and the only exception it states is for private nonbusiness passenger carriers. A one-truck carrier outside the daily report rule can still owe the maintenance records.
Arizona's 26,001-Pound Line for In-State Trucks
Arizona sets two weight lines in one definition. A.R.S. 28-5201 counts a single vehicle or combination as a commercial motor vehicle at twenty-six thousand one or more pounds for intrastate commerce, by gross vehicle weight rating or gross weight, whichever is greater. The same definition sets ten thousand one or more pounds for interstate commerce, by rating alone. Both lines cover vehicles used to carry passengers or property for a commercial enterprise and not exempt from the state's gross weight fees.
The motor carrier rules borrow that definition. R17-5-203 amends the federal definitions so that commercial motor vehicle has the statute's meaning. R17-5-202 then adopts federal Parts 393, 395, 396, 397 and 399, among others, revised as of October 1, 2023. That brings the DVIR, the repair certification and the maintenance records to Arizona units that meet the definition.
Under A.R.S. 28-5201, check each Arizona unit in intrastate commerce against the 26,001-pound line before assuming the Part 396 inspection rules and DVIR apply. A box truck rated at or above that line and running only in-state meets the definition. A service van below that line and running only in-state sits outside the definition these rules use. Neither that statute nor R17-5-203 has a clause that keeps chosen federal parts on those lighter units. Once that van works in interstate commerce, the lower interstate line applies to it.
Florida's Under-26,001-Pound Carve-Out Still Keeps Part 393
Florida applies the federal rules to in-state carriers by statute. Fla. Stat. 316.302(1)(b) makes owners and drivers of commercial motor vehicles in intrastate commerce subject to federal Parts 382-386 and 390-397, as they existed on December 31, 2023, except as the section provides otherwise. Part 396, and with it the DVIR, sits inside that range.
The carve-out is subsection (1)(f). It reaches a person who operates a vehicle under 26,001 pounds by gross vehicle weight, gross vehicle weight rating and gross combined weight rating. The vehicle must run solely in intrastate commerce and carry no hazardous materials in amounts that require placarding. That operator is outside subsection (1).
The exemption keeps some rules on that operator. The person must still comply with federal Parts 382, 392 and 393 and with 396.3(a)(1) and 396.9. Part 393 is where the windshield condition rule lives, and 396.3(a)(1) is the duty to keep parts and accessories in safe and proper operating condition at all times. Under 316.302(1)(f), a cracked windshield on a light Florida van in intrastate service, DVIR or not, remains a maintenance problem the operator must fix. The 396.11 daily report is not among the listed carry-overs, and neither are the 396.3(b) records. Logging the replacement anyway gives the operator dated proof that the safe-condition duty was met.
The weight line matches in the two states at 26,001 pounds, but what follows from it differs. An Arizona in-state unit under that line sits outside the definition the rules use. A Florida unit under it stays under Parts 382, 392 and 393, 396.3(a)(1) and 396.9, though not the 396.11 daily report.
Recording the Replacement Glass Monogram
Replacement glass answers to the same federal standard as factory glass. FMVSS 205 requires glazing intended for replacement to meet the standard's requirements. A prime glazing manufacturer certifies its glazing by adding the symbol DOT and a manufacturer's code mark that NHTSA assigns. Those letters and numerals must be the same size as the other required marks.
The marks sit in the monogram, the small block of print in a lower corner of the windshield. It carries the glass maker's name and the DOT number with its code, among other marks. After a windshield replacement, copy the DOT code and maker name into the unit file. If the same unit cracks another windshield a year later, the entry shows whose glass went in last time and when.
A complete glass entry in the unit file holds these items:
- The vehicle identification the maintenance record uses: company number if marked, make, serial number and year.
- The date the crack was reported and the driver's description from the report.
- The repair certification on that report, or the "repair unnecessary" certification for a crack judged harmless.
- The next driver's signed review of the report.
- The date the windshield was replaced and the nature of the work.
- The DOT code and maker name read from the new glass's monogram.
- The place the file is kept, which is where the vehicle is housed or maintained.
The crack report, its certification and the signed review share the report's three-month clock. The other entries belong in the maintenance file, kept for 1 year and for 6 months after the unit leaves your control.
A Glass Entry for Every Unit File
Pull the reports for any unit that logged a crack in the last three months, and confirm each carries a repair certification and a signed driver review. Then match each one to a dated replacement entry in the maintenance file, the record that outlasts the report. When units still need glass, we take each vehicle by unit number through the fleet windshield replacement service, handle several in one visit and bill the business directly. Pick a date for the yard on the fleet booking page.
Windshield defect and DVIR record questions
What happens after a driver reports a cracked windshield on a DVIR?
The carrier or its agent must repair a listed defect likely to affect safe operation before requiring or permitting anyone to drive the unit. It then certifies on that report either repair or no need for repair. A driver who later takes the unit signs the report, which acknowledges a certification shows the required repairs were performed.
Can a fleet keep windshield DVIR records electronically?
Yes. The 396.11 report may be created and maintained in electronic format under 49 CFR 390.32. Store the repair certification and the driver review signature with the crack entry in the app, since the report and both certifications share one retention period, while the replacement itself belongs in the maintenance file.
Does a one-truck company need a DVIR for a cracked windshield?
Section 396.11 excepts any motor carrier operating only one commercial motor vehicle, so the daily report rule does not apply to it. The 396.3 maintenance duty has a separate exception, limited to private nonbusiness passenger carriers, so parts and accessories must still be kept in safe operating condition and the maintenance records still apply.
Which marks from replacement windshield glass belong in the unit file?
Copy the DOT symbol, the manufacturer code mark and the maker name from the monogram into the unit file after the replacement. FMVSS 205 has a prime glazing manufacturer certify its glass with the symbol DOT and a code mark that NHTSA assigns, so the entry shows whose glass went in and when.
Sources
- 49 CFR 396.11, Driver vehicle inspection reports
- 49 CFR 396.13, Driver inspection
- 49 CFR 396.3, Inspection, repair, and maintenance
- 49 CFR 390.5, Definitions
- Arizona Revised Statutes 28-5201, Definitions
- Arizona Administrative Code R17-5-203
- Arizona Administrative Code R17-5-202
- Florida Statutes 316.302 (2025)
- FMVSS 205, Glazing materials (49 CFR 571.205)
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