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2017 New Hampshire Revised Statutes
Title XXI - MOTOR VEHICLES
Chapter 266 - EQUIPMENT OF VEHICLES
Section 266:59-a - Motorcycle Noise Levels.
Universal Citation: NH Rev Stat § 266:59-a (2017)
266:59-a Motorcycle Noise Levels. –
I. No person shall operate in this state any motorcycle which produces a sound level in excess of the following decibels, when measured in accordance with the provisions of the SAE International Recommended Practice SAE J2825, "Measurement of Exhaust Sound Pressure Levels of Stationary On-Highway Motorcycles'':
(a) For all motorcycles, 92 decibels while the engine is operating at idle speed; or
(b) For motorcycles with less than 3 or more than 4 cylinders, 96 decibels while the engine is operating at 2,000 revolutions per minute or 75 percent of maximum engine speed, whichever is less; or
(c) For 3 and 4 cylinder motorcycles, 100 decibels while the engine is operating at 5,000 revolutions per minute or 75 percent of maximum engine speed, whichever is less.
II. No person shall pass for the purposes of the inspection required by RSA 266:1 any motorcycle which produces a sound level in excess of the following decibels, when measured in accordance with the provisions of the SAE International Recommended Practice SAE J2825, "Measurement of Exhaust Sound Pressure Levels of Stationary On-Highway Motorcycles'':
(a) For all motorcycles, 92 decibels while the engine is operating at idle speed; or
(b) For motorcycles with less than 3 or more than 4 cylinders, 96 decibels while the engine is operating at 2,000 revolutions per minute or 75 percent of maximum engine speed, whichever is less; or
(c) For 3 and 4 cylinder motorcycles, 100 decibels while the engine is operating at 5,000 revolutions per minute or 75 percent of maximum engine speed, whichever is less.
III. Any person who violates the provisions of this section shall be guilty of a violation and shall be fined not less than $100 nor more than $300.
I. No person shall operate in this state any motorcycle which produces a sound level in excess of the following decibels, when measured in accordance with the provisions of the SAE International Recommended Practice SAE J2825, "Measurement of Exhaust Sound Pressure Levels of Stationary On-Highway Motorcycles'':
(a) For all motorcycles, 92 decibels while the engine is operating at idle speed; or
(b) For motorcycles with less than 3 or more than 4 cylinders, 96 decibels while the engine is operating at 2,000 revolutions per minute or 75 percent of maximum engine speed, whichever is less; or
(c) For 3 and 4 cylinder motorcycles, 100 decibels while the engine is operating at 5,000 revolutions per minute or 75 percent of maximum engine speed, whichever is less.
II. No person shall pass for the purposes of the inspection required by RSA 266:1 any motorcycle which produces a sound level in excess of the following decibels, when measured in accordance with the provisions of the SAE International Recommended Practice SAE J2825, "Measurement of Exhaust Sound Pressure Levels of Stationary On-Highway Motorcycles'':
(a) For all motorcycles, 92 decibels while the engine is operating at idle speed; or
(b) For motorcycles with less than 3 or more than 4 cylinders, 96 decibels while the engine is operating at 2,000 revolutions per minute or 75 percent of maximum engine speed, whichever is less; or
(c) For 3 and 4 cylinder motorcycles, 100 decibels while the engine is operating at 5,000 revolutions per minute or 75 percent of maximum engine speed, whichever is less.
III. Any person who violates the provisions of this section shall be guilty of a violation and shall be fined not less than $100 nor more than $300.
Source. 1992, 94:1. 1993, 9:1. 2005, 266:2. 2012, 61:1, eff. Jan. 1, 2013.
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