Preventative Health

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Driver Preventative Maintenance Program

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DOT / CMV Health Requirements

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Flu v.s. COVID-19 Symptoms 

Endorsements and Restrictions

Drivers who operate special types of CMVs must pass additional tests to obtain any of the following endorsements placed on their CDL:

Endorsement code
Description

T

Double/Triple Trailers (Knowledge test only)

P

Passenger (Knowledge and Skills Tests)

N

Tank vehicle (Knowledge test only)

H

Hazardous materials (Knowledge test only)

X

Combination of tank vehicle and hazardous materials endorsements (Knowledge test only)

S

School Bus (Knowledge and Skills Tests)
CLP Endorsements - Only 3 endorsements are allowed on the CLP

P

Passenger, A CLP holder with a "P" endorsement is prohibited from operating a CMV carrying passengers, other than Federal/state auditors and inspectors, test examiners, other trainees, and the CDL holder accompanying the CLP holder as prescribed by 49CFR383.25(a)(1).

S

School Bus, A CLP holder with an "S" endorsement is prohibited from operating a school with passengers, other than Federal/state auditors and inspectors, test examiners, other trainees, and the CDL holder accompanying the CLP holder as prescribed by 49CFR383.25(a)(1).

N

Tank Endorsement, A CLP holder with an "N" endorsement may only operate an empty tank vehicle, and is prohibited from operating any tank vehicle that previously contained hazardous materials that have not been purged of any residue.

Restrictions

Restriction code
Description

L

If the driver does not pass the Air Brakes Knowledge Test, does not correctly identify the air brake system components, does not properly conduct an air brake systems check, or does not take the Skills test in a vehicle with a full air brake system, the driver must have an "L" no full air brake restriction placed on their license.

Z

If the driver takes the test in a vehicle with an air over hydraulic brake system, then they will have a "Z" no full air brake restriction placed on their license. In either case the driver is not authorized to operate a CMV equipped with full air brakes.

E

If the driver takes the Skills Test in a vehicle that has an automatic transmission, then an "E" no manual transmission restriction is placed on their license.

O

If the driver takes the Skills Test in a Class A vehicle that has a pintle hook or other non-fifth wheel connection, they will have an "O" restriction placed on their license restricting them from driving any Class A vehicle with a fifth wheel connection.

M

If a driver possesses a Class A CDL, but obtains his or her passenger or school bus endorsement in a Class B vehicle the State must place an "M" restriction indicating that the driver can only operate Class B and C passenger vehicle or school buses.

N

If a driver possesses a Class B CDL, but obtains his or her passenger or school bus endorsement in a Class C vehicle; the State must place an "N" restriction indicating that the driver can only operate Class C passenger vehicle or school buses.

V

If the State is notified by the FMCSA that a medical variance has been issued to the driver, the State must indicate the existence of such a medical variance on the CDLIS driving record and the CDL document using a restriction code "V" to indicate that there is information about the medical variance on the CDLIS record.

States may have a more restrictive category for a class of license, or have additional codes for endorsements or restrictions on CDLs that are not mentioned in the Federal regulations, as long as these items are fully explained on the license document.

Updated: Thursday, March 27, 2014