Title
Introduction of Incorporated County of Los Alamos Ordinance No. 02-389; An Ordinance Adding Section 38-316 to Chapter 38 (Traffic and Vehicles), Article 5 (Operation) Prohibiting the Use of Engine Retarders on Certain Roads Within the County
Recommended Action
I introduce, without prejudice, Incorporated County of Los Alamos Ordinance No. 02-389; Incorporated County of Los Alamos Ordinance No. 02-389; An Ordinance Adding Section 38-316 to Chapter 38 (Traffic and Vehicles), Article 5 (Operation) Prohibiting the Use of Engine Retarders on Certain Roads Within the County.
County Manager's Recommendation
The County Manager recommends that Council introduce this Ordinance.
Board, Commission or Committee Recommendation
On November 5, 2026, the Transportation Board reviewed the Incorporated County of Los Alamos Ordinance No. 02-389, also known as the Engine Brake Ordinance. Following discussion, the Board recommended that the County Council approve the ordinance as presented.
Body
Ordinance No. 02-389 adds Section 38-316 to the Los Alamos County Code to prohibit the use of engine retarders (commonly known as engine brakes or exhaust brakes) on designated roadways within the County, including State Road 4 between approximately mile markers 62 and 64.
The ordinance is intended to reduce noise impacts in populated areas, protect public health and safety, enhance residents’ quality of life, and improve environmental conditions.
The ordinance establishes signage requirements, enforcement authority, and penalties for violations, while providing an exception for bona fide emergencies. The ordinance would become effective 30 days after publication of the notice of adoption.
Proposed Public Hearing Schedule: December 15, 2026.
Alternatives
Council could choose not to approve Incorporated County of Los Alamos Ordinance No. 02-389.
Fiscal and Staff Impact/Planned Item
Traffic & Streets Staff time and material costs for sign placement and maintenance. Costs...
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