Skip to Main Content
<< Back | Return to Main COMAR Search Page

11 records match your request.

FileAbstract
11.21.02.00.htm 11.21.02.00. Title 11 DEPARTMENT OF TRANSPORTATION Subtitle 21 MOTOR VEHICLE ADMINISTRATION ― COMMERCIAL MOTOR VEHICLES Chapter 02 Diesel Vehicle Emissions Control Program Authority: Transportation Article, §12-104(b) and 23-401―23-404, Annotated Code of Maryland
11.21.02.01.htm 11.21.02.01. 01 Definitions.. A. In this chapter, the following terms have the meanings indicated.. B. Terms Defined.. 1) "Diesel vehicle" means a motor vehicle that:. a) Is powered by a compression ignition engine; and. b) Has a manufacturer's gross vehicle weight rating or gross combination weight rating over 10,000 pounds.2) "Governor" means a mechanism installed on a diesel engine by the original equipment manufacturer for the purpose of limiting the maximum engine speed.
11.21.02.02.htm 11.21.02.02. 02 Incorporation by Reference.. Snap-Acceleration Smoke Test Procedure for Heavy-Duty Diesel Powered Vehicles, Surface Vehicle Recommended Practice, SAE J1667 (Society of Automotive Engineers, Inc. February 1996) is incorporated by reference.
11.21.02.03.htm 11.21.02.03. 03 Applicability.. Unless otherwise stated in this chapter, the regulations in this chapter apply to a diesel vehicle that is operating on any highway in Maryland.
11.21.02.04.htm 11.21.02.04. 04 General Requirements for the Emissions Test.. A. A person may not cause, allow, or permit the operation of a diesel vehicle on any highway in Maryland, if the vehicle:1) Discharges exhaust emissions, the opacity of which exceeds the applicable emissions opacity standards under Regulation .06 of this chapter; or2) Has emission control, exhaust equipment, or a governor installed either on the vehicle or diesel engine which has been disconnected, detached, or d
11.21.02.05.htm 11.21.02.05. 05 Emissions Test Procedure.. A. The emissions test shall be conducted in accordance with the procedures described in SAE J1667.. B. The general procedures for a valid emissions test in accordance with SAE J1667 are as follows:. 1) Before testing, verify that the emissions test equipment meets the requirements under Regulation .07 of this chapter;2) Before initiating the test, determine that all accessories and any engine braking devices are turned off;
11.21.02.06.htm 11.21.02.06. 06 Emissions Standards.. A. Diesel vehicle engines of model year 1991 and newer may not produce emissions that exceed 40 percent opacity.B. Diesel vehicle engines of model year 1990 through 1974 may not produce emissions that exceed 55 percent opacity.C. Diesel vehicle engines of model year 1973 and older may not produce emissions that exceed 70 percent opacity.
11.21.02.07.htm 11.21.02.07. 07 Emissions Test Equipment.. A. Equipment used to conduct the emissions test shall be:. 1) Designed to meet the equipment specifications provided in SAE J1667;. 2) Approved by the Maryland Department of the Environment; and. 3) Maintained in accordance with manufacturer's specifications.. B. Maintenance records for emissions test equipment shall be maintained for a period of 4 years from the date of issue and shall include:1) The dates of calibration;.
11.21.02.08.htm 11.21.02.08. 08 Individuals Authorized to Conduct Emissions Tests on Diesel Vehicles.. A. Emissions Inspectors.. 1) An individual who is employed by the State Police or the Maryland Transportation Authority Police may be certified as an emissions inspector by demonstrating to the State Police:a) The ability to conduct an emissions test under Regulations .04 and .05 of this chapter using emissions test equipment meeting the requirements under Regulation .07 of this b) A thorough understandi
11.21.02.09.htm 11.21.02.09. 09 Enforcement.. A. Diesel Vehicles Registered In Maryland.. 1) If it is determined that the emissions test in this chapter cannot be performed on a diesel vehicle registered in Maryland because the vehicle is operating as described under Regulation .04A(2) of this chapter, the diesel vehicle shall be considered to have failed the emissions test and shall be subject to §A(2)5) of this regulation and Transportation Article, §23-404, Annotated Code of Marylan2) A safety equipment rep
11.21.02.9999.htm 11.21.02.9999. Administrative History Effective date: July 10, 2000 (27:13 Md. R. 1212).
<< Back | Return to Main COMAR Search Page