What is MC number 620731?

MC number 620731 is assigned to Highway Mail Company, a registered motor carrier with the FMCSA under USDOT number 304808.

Is Highway Mail Company Safe? DOT 304808 – Safety Rating, Crashes & Violations

Q: What is the safety rating of Highway Mail Company?

Highway Mail Company has a safety rating of "Satisfactory" as of September 30, 2010, based on the most recent FMCSA compliance review.

Q: How many inspections has Highway Mail Company had?

Highway Mail Company has recorded 37 total inspections, with 5 out-of-service orders.

Q: Where is Highway Mail Company located?

Highway Mail Company is headquartered at 18555 Y Avenue, Granger, IA 50109-0577.

This carrier is active with a Satisfactory safety rating.

Highway Mail Company is a registered motor carrier with the FMCSA under USDOT number 304808. The company operates from Granger, IA and maintains an active operating status with 22 power units and 32 drivers on record.

Safety Rating

FMCSA Safety Rating

✓ Satisfactory

Rated: September 30, 2010

Highway Mail Company holds a "Satisfactory" safety rating from the Federal Motor Carrier Safety Administration (FMCSA). This rating indicates that the carrier has been found to comply with federal safety regulations based on the most recent compliance review conducted by FMCSA. View official FMCSA record →

Inspection Summary

All-time Inspections

All-time

Total

OOS

Driver OOS

Vehicle OOS

37 inspections reflects moderate road activity.

OOS Rate13.51%

The out-of-service (OOS) rate represents the percentage of inspections that resulted in the carrier being placed out of service. 13.5% — approaching the national vehicle OOS average of ~21%.

Crash History

Crash Records

All-time

Total

Fatal

Injuries

Tow-Away

1 crash recorded. Low count, but crash data should always be reviewed alongside inspection history.

BASICS Safety Scores

BASICS Scores

Higher = more risk · FMCSA Behavior Analysis and Safety Improvement Categories

5.1

Unsafe Driving

Measures violations related to speeding, reckless driving, and improper lane changes.

0.8

HOS Compliance

Tracks hours-of-service violations, including driving beyond legal limits without rest.

0.0

Driver Fitness

Reflects issues with driver qualifications, licenses, and medical certifications.

0.0

Controlled Substances

Captures drug and alcohol violations, including failed or refused tests.

5.7

Vehicle Maintenance

Reflects brake, tire, lighting, and other equipment-related inspection violations.

Scores above 65 (general freight) or 50 (passenger/hazmat) trigger an FMCSA Alert. Higher scores indicate more safety risk. National median is approximately 20–30 for active carriers.

Other Carriers in Granger, IA

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Carrier Insight

Highway Mail Company is a medium-sized motor carrier operating in Iowa. With 37 total inspections on record, the carrier has an out-of-service rate of 13.5%, which is below the national average of approximately 21%. 1 crash has been reported. Review crash details alongside fleet size and inspection history before making hiring decisions.

A Satisfactory rating from the FMCSA indicates that Highway Mail Company meets federal safety standards based on the most recent compliance review. This is the highest rating a carrier can receive.

The company operates 22 power units and employs 32 drivers. This is a mid-sized operation relative to the broader carrier market.

Frequently Asked Questions

What is USDOT Number 304808?

USDOT number 304808 is assigned to Highway Mail Company, an active motor carrier registered with the FMCSA, based in Granger, IA.

What is the safety rating of Highway Mail Company?

Highway Mail Company has a safety rating of Satisfactory as of September 30, 2010.

How many inspections has Highway Mail Company had?

Highway Mail Company has recorded 37 total inspections with 5 out-of-service orders, representing an OOS rate of 13.51%.

Where is Highway Mail Company located?

Highway Mail Company is headquartered at 18555 Y Avenue, Granger, IA 50109-0577.

What does "Not Rated" mean?

"Not Rated" means the FMCSA has not conducted a formal compliance review for this carrier. It does not indicate a safety problem — many active carriers operate without a formal rating.

Is zero crashes always a good sign?

Generally yes, but context matters. A carrier with zero crashes and very few inspections may simply have limited road exposure. Always review crash data alongside inspection volume and fleet size.

What is a normal OOS rate?

The national average vehicle out-of-service rate is approximately 21%. Driver OOS averages around 5%. Rates significantly above these thresholds may indicate recurring compliance issues.

How often is FMCSA data updated?

FMCSA publishes updated carrier data monthly. This page reflects the most recent available snapshot, updated on the date shown above.

What is the MC number for Highway Mail Company?

The MC number for Highway Mail Company is MC# 620731. The MC number is issued by the FMCSA and authorizes carriers to operate in interstate commerce.

Data sourced from the FMCSA Open Data Portal. Updated monthly. DOT# 304808 · Last updated: 2026-03-09. View official FMCSA record →

Highway Mail Company (DOT# 304808 · MC# 620731) – FMCSA Carrier Profile