Additional light source type headlamp Informal document No. GRE-65-32 (65th GRE, 28-31 March 2011, agenda item 5(j)) Additional light source type headlamp Requirements for the amendments to ECE-R53 and R113 for motorcycle Presented by International Motorcycle Manufacturer’s Association (IMMA) The 65th GRE session March 30, 2011

Purpose This system is intended to improve the night-time cornering visibility for motorcycle riders. Functions This system automatically provides an illuminated area produced by an additional light source in accordance with the bank angle of the motorcycle to the illumination area produced by principal headlamp.

Fig.1 Horizontal inclination adjustment system (HIAS) Illuminated area by conventional headlamp Illuminated area by HIAS Cut-off-line by conventional headlamp Cut-off-line by HIAS Illuminated area by principal headlamp Illuminated area by additional light source Fig.2 Additional light source type headlamp Cut-off-line by principal headlamp Cut-off-line by additional light source

ECU Fig.3 System block diagram (example) bank angle sensor Headlamp unit Additional lighting unit (right) Principal headlamp unit ECU bank angle sensor Additional lighting unit (left) Fig.3 System block diagram (example)

Illuminated area by principal headlamp Illuminated area by additional light source

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