1. Additional light source type headlamp
Informal document No. GRE-65-32
(65th GRE, 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

2. 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.

3. 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

4. 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)

5. Illuminated area by principal headlamp
Illuminated area by additional light source

6. Thank you very much for your kind attention.