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"A Little Blue Light"
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<p>[quote user="rcdrye"]</p> <p>In Amtrak operations I've listened to, even where blue flag/light rules are in effect, the carmen often ask for "three-point" protection before going between cars. In the NORAC description this involves setting brakes, putting the reverser in neutral or shutoff position depending on equipment, and opening the field switch (on diesels, this prevents the alternator from generating electricity for the motors). "Three-point" is required where no blue flag or lights are available.</p> <div style="clear:both;">[/quote]</div> <div style="clear:both;"></div> <div style="clear:both;">It's a commonly confused term (sometimes by railroaders) but the term you're looking for is "three-step" protection. Three-point refers to the three points of contact that are required while riding the outside of moving equipment.</div> <div style="clear:both;"></div> <div style="clear:both;">I should add that three-step protection is most commonly used by freight switching crews. At least under NORAC, brakemen and conductors are required to get three-step protection before going between cars to lace up air hoses or perform other duties. It's not just for passenger train repair.</div>
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