<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;"><div><br></div><div>If you install modulating headlight system on yr Calif legal motorcycle, here's the applicable CVC section to follow, and also a good idea to make a copy and keep in your rig:</div><div><br></div><div>California Vehicle Code: </div><div><span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; "><div id="app_header"><h3 style="font-family: Arial, Helvetica, sans-serif; font-weight: bold; font-size: 1.25em; color: rgb(0, 0, 0); ">V C Section 25251.2 Motorcycles Headlamp Flasher</h3></div><div id="app_content"><h4 class="snam" style="font-family: Arial, Helvetica, sans-serif; font-weight: bold; font-size: 1.2em; color: rgb(0, 0, 0); ">Motorcycles: Headlamp Flasher</h4><p style="margin-top: 0.7em; margin-right: 0em; margin-bottom: 0.9em; margin-left: 0em; ">25251.2. Any motorcycle may be equipped with a
means of modulating the upper beam of the headlamp between a high and a lower brightness at a rate of 200 to 280 flashes per minute. Such headlamps shall not be so modulated during darkness.</p><div><p style="margin-top: 0.7em; margin-right: 0em; margin-bottom: 0.9em; margin-left: 0em; "></p></div><div class="vcfooter" style="font-size: 18px; ">Added Ch. 35, Stats. 1980. Effective March 7, 1980.</div><div class="vcfooter" style="font-size: 18px; "><br></div><div class="vcfooter" style="font-size: 18px; ">Jonny</div><div class="note" style="text-indent: 1em; font-size: 1em; font-weight: bold; "></div><div></div></div></span></div><br>--- On <b>Wed, 2/23/11, Jonathan Seutter <i><ultrask824@yahoo.com></i></b> wrote:<br><blockquote style="border-left: 2px solid rgb(16, 16, 255); margin-left: 5px; padding-left: 5px;"><br>From: Jonathan Seutter <ultrask824@yahoo.com><br>Subject: Re: [Silly Little Cars] FYI- modulating headlights (a kind of
flashing headlight) are allowed on motorcycles according to Federal Law.<br>To: "Silly Little Email List" <silly_little_cars@lists.sillylittlecars.com><br>Date: Wednesday, February 23, 2011, 10:00 PM<br><br><div id="yiv421025987"><table cellspacing="0" cellpadding="0" border="0"><tbody><tr><td valign="top" style="font:inherit;">I'll check whats ok per the Calif Vehicle Code.<div><br></div><div>Jonny<br><br>--- On <b>Wed, 2/23/11, HAL <i><hal1812@yahoo.com></i></b> wrote:<br><blockquote style="border-left:2px solid rgb(16, 16, 255);margin-left:5px;padding-left:5px;"><br>From: HAL <hal1812@yahoo.com><br>Subject: [Silly Little Cars] FYI- modulating headlights (a kind of flashing headlight) are allowed on motorcycles according to Federal Law.<br>To: silly_little_cars@lists.sillylittlecars.com<br>Date: Wednesday, February 23, 2011, 7:41 PM<br><br><div class="yiv421025987plainMail">In case you want a flashing headlight(s) on your Cushman or
Interceptor, there are aftermarket circuits for this and I've even seen an Internet sight that explains how to build your own (but admits they were uncertain if it modulating within the allowed frequencies). Note, it also needs to include a
light sensor to turn it off when there are levels of light lower than a certain level.<br><br>You might also want to consider having an off switch so you can turn it off during the day in case you get pulled over too much by police who are unaware this is legal for motorcycles (or unaware that your vehicle is a motorcycle). I'm debating on doing this as many motorcyclists believe cars notice them more with this, plus I also thought it might be a bit of fun. <br><br>Its from the Code of Federal Regulation 49 CFR Section 571.108 S10.17.5. (revised as of October 1, 2010). You can find the text at the Government Printing Office's website at <a rel="nofollow" target="_blank" href="http://edocket.access.gpo.gov/cfr_2010/octqtr/49cfr571.108.htm">http://edocket.access.gpo.gov/cfr_2010/octqtr/49cfr571.108.htm</a><br><br>or I've reproduced the text below. Have fun. <br><br> S10.17.5 Motorcycle headlamp modulation system. A headlamp on a
<br>motorcycle
may be activated to modulate either the upper beam or the <br>lower beam from its maximum intensity to a lesser intensity, provided <br>that:<br> S10.17.5.1 Modulation.<br> (a) The rate of modulation must be 240 40 <br>cycles per minute.<br> (b) The headlamp must be operated at maximum power for 50 to 70 <br>percent of each cycle.<br> (c) The lowest intensity at any test point must be not less than 17 <br>percent of the maximum intensity measured at the same point.<br> (d) The modulator switch must be wired in the power lead of the beam <br>filament being modulated and not in the ground side of the circuit.<br> (e) Means must be provided so that both the lower beam and upper <br>beam remain operable in the event of a modulator failure.<br> (f) The system must include a sensor mounted with the axis of its <br>sensing element perpendicular to a horizontal
plane. Headlamp modulation <br>must cease whenever the level of light emitted by a tungsten filament <br>light operating at 3000[deg] Kelvin is either less than 270 lux of <br>direct light for upward pointing sensors or less than 60 lux of <br>reflected light for downward pointing sensors. The light is measured by <br>a silicon cell type light meter that is located at the sensor and <br>pointing in the same direction as the sensor. A Kodak Gray Card (Kodak <br>R-27) is placed at ground level to simulate the road surface in testing <br>downward pointing sensors.<br> (g) When tested in accordance with the test profile shown in Figure <br>9, the voltage drop across the modulator when the lamp is on at all test <br>conditions for 12 volt systems and 6 volt systems must not be greater <br>than 0.45 volt. The modulator must meet all the provisions of the <br>standard after completion of the test profile shown in Figure 9.<br> (h)
Means must be provided so that both the lower and upper beam <br>function at design voltage when the headlamp control switch is in either <br>the lower or upper beam position when the modulator is off.<br> S10.17.5.2 Replacement modulators. Each modulator not intended as <br>original equipment, or its container, must be labeled with the maximum <br>wattage, and the minimum wattage appropriate for its use.<br> S10.17.5.2.1 Replacement performance. Each modulator, not intended <br>as original equipment, must comply with S10.17.5.1 (a) through (g) when <br>connected to a headlamp of the maximum rated power and a headlamp of the <br>minimum rated power, and must provide means so that the modulated beam <br>functions at design voltage when the modulator is off.<br> S10.17.5.2.2 Replacement instructions. Instructions, with a diagram, <br>must be provided for mounting the light sensor including location on the
<br>motorcycle, distance above the road surface, and orientation with <br>respect to the light.<br><br><br> <br>_______________________________________________<br>Silly Little Cars Email List<br><a rel="nofollow">sillylittlecars@sillylittlecars.com</a><br><a rel="nofollow" target="_blank" href="http://lists.sillylittlecars.com/listinfo.cgi/silly_little_cars-sillylittlecars.com">http://lists.sillylittlecars.com/listinfo.cgi/silly_little_cars-sillylittlecars.com</a><br>Use the wiki at <a rel="nofollow" target="_blank" href="http://sillylittlecars.com">http://sillylittlecars.com</a><br><br><br></div></blockquote></div></td></tr></tbody></table></div><br>-----Inline Attachment Follows-----<br><br><div class="plainMail">_______________________________________________<br>Silly Little Cars Email List<br><a ymailto="mailto:sillylittlecars@sillylittlecars.com"
href="/mc/compose?to=sillylittlecars@sillylittlecars.com">sillylittlecars@sillylittlecars.com</a><br><a href="http://lists.sillylittlecars.com/listinfo.cgi/silly_little_cars-sillylittlecars.com" target="_blank">http://lists.sillylittlecars.com/listinfo.cgi/silly_little_cars-sillylittlecars.com</a><br>Use the wiki at <a href="http://sillylittlecars.com" target="_blank">http://sillylittlecars.com</a><br><br><br></div></blockquote></td></tr></table>