Sljohnson
Phone (301) 330-0628Rockville, MD
Find this carrier by: USDOT 4248740 · MC 1646571 · 301-330-0628 · 3013300628 · Rockville, MD
Carrier information from FMCSA records. See dates and record coverage. How to verify an FMCSA record.
- USDOT
- USDOT4248740
- MC
- 1646571
- Registered
- 2024 · 2 yrs
- Location
- Rockville, MD
- MCS-150 filed
- Jun 3, 2024
USDOT registration
Active
Registration status; not operating authority
Authority record
Not listed active
Legacy record; verify in Motus
Insurance record
No filing shown
Does not establish uninsured status
Safety rating
Not rated
No safety rating available; not a safety verdict
Overview
The short version and the key numbers.
Sljohnson is an active carrier and broker based in Rockville, MD, registered with FMCSA under USDOT 4248740 and MC 1646571. Phone: (301) 330-0628. It reports 1 power unit and 1 driver on its MCS-150 (Jun 3, 2024). In the last 24 months it had 1 roadside inspection, a 0% vehicle out-of-service rate (national average 22.9%) and no reportable crashes in the available records.
USDOT 4248740 was first registered with FMCSA on Jun 3, 2024 (2 years ago), and its most recent MCS-150 filing is dated Jun 3, 2024. Its vehicles were inspected 1 time on record, most recently on Dec 23, 2025, most often in MD.
Equipment on record
VIN = decoded from the carrier's vehicles · Inspection = seen at roadside inspections · MCS-150 = filed by the carrier
Dates behind this profile
- MCS-150 filing
- Jun 3, 2024
- Registration record changed
- Oct 24, 2026
- Latest inspection recorded
- Dec 23, 2025
- Latest crash recorded
- Not available
- Latest vehicle observation
- Dec 23, 2025
Each date applies to its own record. A registration change does not mean every filing changed. An inspection or vehicle observation describes that date, not continuous operation today.
USDOT registration and operating authority are different records. A crash entry records involvement, not a finding of fault. Missing information is not a clean safety record.
Company details
Filed identity, officers, contacts and registration details.
Company identity & officers
- Company officer
- Samuel Larry Johnson Sr.
- Legal name
- Sljohnson
- Doing business as
- Sljohnsonincsl Johnson Plumbing& Heating
- Classification
- Private (Property) · Authorized For-Hire
- Registered as
- Carrier & Broker
Registration & filings
- USDOT number
- 4248740
- Docket numbers
- MC 1646571 (active)
- Registered
- Jun 3, 2024 (2 yrs)
- D&B (DUNS)
- 19387969
- Last MCS-150
- Jun 3, 2024
- Usual MCS-150 schedule
- October 2026 (see temporary relief below)
- Operation
- Intrastate Only (Non-Hazmat)
- Hazmat, as filed
- No
- Passenger carrier, as filed
- Not available
FMCSA currently provides additional time for biennial updates due on or after June 1, 2026 and suspends USDOT inactivation for those missed updates. The usual schedule above does not establish a violation. Read our update guide and the cited FMCSA notice (guidance checked October 20, 2026).
Carriers in Rockville, MD
- USDOT registrations in Rockville
- 1,692
- Currently active
- 678 (40%)
- One-truck operations
- 1,121 (66%)
- With for-hire authority
- 597 (35%)
- Registered in the last 12 months
- 56
From FMCSA census records as of Nov 12, 2026. This carrier reports 1 power unit against a local average of 4.1.
Find this carrier by
- USDOT
- 4248740
- Docket numbers
- MC 1646571
- D&B (DUNS)
- 19387969
- Phone
- (301) 330-0628301-330-06283013300628
- Fax
- (301) 519-9017301-519-90173015199017
- sljohnson23@aol.com
- Officers
- Samuel Larry Johnson Sr.
- Legal name
- Sljohnson
- DBA
- Sljohnsonincsl Johnson Plumbing& Heating
- Address
- 330 N Stonestreet Ave Ste T, Rockville, MD 20850
- Mailing address
- 25916 Reva Dr, Damascus, MD 20872-1229
- VINs inspected under this USDOT
- 1GD322CG3EF143603
- Plates inspected under this USDOT
- 5BD6840 MD
Available registration and contact identifiers. Vehicle identifiers below are a recent sample; open a VIN or plate to see its dated records.
Legitimacy check
A quick screen from public records. A flag is a reason to verify, not proof of wrongdoing.
- Pass: Not on the U.S. sanctions list
Name does not match the Treasury OFAC list.
- Pass: USDOT registration is active
FMCSA lists USDOT 4248740 as active.
- Check: Verify current operating authority
No active authority is listed in this stored legacy record; confirm the current status in Motus.
- Check: Verify current insurance
No BIPD amount in this stored authority record. Check Motus filings and confirm coverage with the insurer.
- Pass: No federal out-of-service orders
None on record for this USDOT.
- Pass: No prior revocation linked
No earlier revoked USDOT is linked to this one.
Connected companies
Other USDOT numbers that share an officer, phone or address with this carrier. A match is a lead to check, not proof.
- Danish Builders INCUSDOT 1688372 · Rockville, MDSame addressNot activePossible link
Matched on FMCSA filings: company officer names, phone and physical address. Large fleets and shared office buildings can match by chance.
Authority & insurance
Stored filing details and guidance for checking current status.
FMCSA filing records
Authority, insurance and notice records can include earlier filings. Read each recorded status and effective date; a filing alone does not confirm current authority or insurance coverage. Missing records do not establish unauthorized operation or missing insurance.
Amounts are shown exactly as filed, without scaling or currency conversion. Confirm coverage and amounts with the insurer.
Operating authority
0 available records · FMCSA release date: Nov 12, 2026. The release date applies to this collection, not the effective date of every filing.
No matching filings available here. This does not establish that no filing exists.
Insurance filings
0 available records · FMCSA release date: Nov 12, 2026. The release date applies to this collection, not the effective date of every filing.
No matching filings available here. This does not establish that no filing exists.
Suspension and revocation notices
0 available records · FMCSA release date: Nov 12, 2026. The release date applies to this collection, not the effective date of every filing.
No matching filings available here. This does not establish that no filing exists.
Insurance history
0 available records · FMCSA release date: Nov 12, 2026. The release date applies to this collection, not the effective date of every filing.
No matching filings available here. This does not establish that no filing exists.
Earlier FMCSA filing records
These records may omit later filings. Their presence does not establish current authority or coverage. Missing records do not establish that a carrier is unauthorized or uninsured. Check current records in FMCSA Motus, then confirm coverage directly with the insurer. Follow the verification guide and its FMCSA sources. Guidance checked October 20, 2026.
Stored operating authority
| Authority type | Recorded status | Application pending | Revocation pending |
|---|---|---|---|
| Common | None | None | None |
| Contract | None | None | None |
| Broker | None | None | None |
Recorded categories and dockets
- MC 1646571
- Active
Stored insurance filing fields
- Liability (BIPD)
- Not on file
- Cargo
- Not on file
- Bond / trust
- Not on file
"On file" means FMCSA received the filing. It does not confirm the policy is active today.
Safety
FMCSA's rating and how this carrier compares with the national average.
Safety rating
- Rating
- Not rated
- Driver inspections (24 mo)
- 1 (1 out of service)
- Vehicle inspections (24 mo)
- 1 (0 out of service)
Out-of-service rates (24 months)
FMCSA BASICs
| Category | Percentile | Measure | Inspections with violation | Acute / critical | Alert |
|---|---|---|---|---|---|
| Unsafe Driving | Not public | 0 | 0 | No | Not available |
| Hours-of-Service | Not public | 0 | 0 | No | Not available |
| Driver Fitness | Not public | 3 | 1 | No | Not available |
| Controlled Substances | Not public | 0 | 0 | No | Not available |
| Vehicle Maintenance | Not public | 10 | 1 | No | Not available |
Percentile: 0 is best, 100 is worst. FMCSA flags an alert above its threshold (65–80% depending on category). Some property-carrier percentiles are not public.
Most-cited violations, in plain English
| Code | Times | Out of service |
|---|---|---|
| 390.21TB2-DOT | 1 | 0 |
| 391.41APC | 1 | 1 |
| 393.9A-LSLI | 1 | 0 |
| 396.17C-PI | 1 | 0 |
Inspections & crashes
Roadside inspections and reportable crashes in the last 24 months.
Inspection, violation and out-of-service counts: FMCSA 24-month inspection record, as of Nov 12, 2026.
Most recent
- Last inspection
- Dec 23, 2025
Latest inspections
| Date | Inspection ID | State | Location | Level | Driver viol. / OOS | Vehicle viol. / OOS | Violations |
|---|---|---|---|---|---|---|---|
| Dec 23, 2025 | 86650990 | MD | Rockville Md | Full (Level 1) | 1 / 1 | 3 / 0 | 4 violations
|
Latest crashes
A roadside out-of-service finding applies to the inspected driver or vehicle; it is different from a federal order against the carrier. Crash involvement does not determine fault or preventability. Counts cover the stated reporting period, not the carrier’s entire history.
Where its vehicles were inspected
| State | Inspections | With OOS |
|---|---|---|
| MD · Maryland | 1 | 1 |
The states where FMCSA recorded roadside inspections for this USDOT. A rough picture of where the fleet runs, not a list of lanes.
Fleet & drivers
Filed fleet and driver counts, cargo types, and vehicles observed at inspections.
Vehicles filed on the MCS-150
| Vehicle | Owned | Term leased | Trip leased |
|---|---|---|---|
| Trucks | 1 | 0 | 0 |
Drivers
- Total drivers
- 1
- CDL drivers
- 0
- Interstate, over 100 mi
- 0
- Interstate, within 100 mi
- 0
- Intrastate, over 100 mi
- 0
- Intrastate, within 100 mi
- 1
- Leased drivers / month
- Not available
Operations
- Power units
- 1
- Trucks
- 1
- Buses
- 0
- Seen at inspections
- 1 truck
Vehicles inspected under this USDOT
| VIN | Year | Make & model | Type | Plate | Inspections | Last seen | Violations / OOS |
|---|---|---|---|---|---|---|---|
| 1GD322CG3EF143603 | 2014 | GMC Sierra | Straight Truck | 5BD6840 MD | 1 | Dec 23, 2025 | 3 / 1 |
Vehicles recorded at roadside inspections under this USDOT (the carrier operated them; this is not a record of ownership). Open a VIN or plate for its dated carrier associations and available history. Plates can change or be reassigned. Vehicle details reflect filed records and available VIN decoding; these observations are not a complete fleet or ownership history.
Equipment evidence
- Straight TruckInspection 1 straight truck recorded at roadside inspections
Cargo carried, as filed
Changes & history
Dated changes, earlier values and filing history for this registration.
Timeline of this registration
- Record updated: dBA name SLJOHNSONINC|SL JOHNSON PLUMBING& HEATING → SLJOHNSONINCSL JOHNSON PLUMBING& HEATING.
- First vehicle recorded at a roadside inspection under this USDOT.
- Most recent vehicle recorded at a roadside inspection.
- Earliest roadside inspection on file.
- Most recent roadside inspection on file.
- Registered with FMCSA as USDOT 4248740.
- MCS-150 filing on record.
Dates come from FMCSA filings and inspection records as filed; a filing date is when FMCSA recorded it, not when an event happened on the road.
Recent changes to the record
| Date | Field | Before | After |
|---|---|---|---|
| Aug 16, 2026 | DBA name | SLJOHNSONINC|SL JOHNSON PLUMBING& HEATING | SLJOHNSONINCSL JOHNSON PLUMBING& HEATING |
MCS-150 filings on record
- MCS-150 filed
Registration
- First registered with FMCSA
- Jun 3, 2024
- Last MCS-150 update
- Jun 3, 2024
Questions & answers
Quick answers, written from this carrier's FMCSA record.
Is Sljohnson an active carrier?
The available FMCSA record lists USDOT 4248740 as active. Registration is separate from operating authority and insurance coverage.
What is Sljohnson's USDOT and MC number?
USDOT 4248740; docket number MC 1646571.
How do I contact Sljohnson?
As filed with FMCSA: phone (301) 330-0628; fax (301) 519-9017; email sljohnson23@aol.com; address 330 N Stonestreet Ave Ste T, Rockville, MD 20850; mailing address 25916 Reva Dr, Damascus, MD 20872-1229.
What insurance does this record show for Sljohnson?
No BIPD amount appears in the stored legacy authority record for MC 1646571. This does not establish current coverage or uninsured status. Check current filings in FMCSA Motus and confirm coverage with the insurer.
What is Sljohnson's safety rating?
No FMCSA safety rating is available here. Not rated does not mean safe or unsafe.
How many trucks and drivers does Sljohnson have?
Power units: 1; drivers: 1, as filed on its MCS-150 (Jun 3, 2024).
What does Sljohnson haul?
Its FMCSA filing lists these cargo types: general freight, household goods, building materials, garbage/refuse, construction, water well.
What equipment does Sljohnson operate?
On government records: Straight Truck (1 straight truck recorded at roadside inspections).
How many inspections and crashes has Sljohnson had?
Inspections: 1; crashes recorded: 0, in the available 24-month records.
What is the usual MCS-150 update schedule for Sljohnson?
The usual USDOT-digit schedule gives October 2026. The latest filing stored here is Jun 3, 2024. FMCSA currently gives extra time for biennial updates due on or after June 1, 2026 and has suspended inactivation for those missed updates. This calculated date is not a finding of noncompliance. Check the linked FMCSA notice for changes.
Reviews
From brokers, shippers and drivers who worked with this carrier.