516
517
512
512 Road marking surface
–Light source
–Diffusing box with white interior finish
517 Thin perforated plate
518 Aperture into diffusing box
Figure 7. Qd illumination system
515
518
DELTA | LTL2000S(Q) Retroreflectometer | 16 |
512 Road marking surface
–Light source
–Diffusing box with white interior finish
517 Thin perforated plate
518 Aperture into diffusing box
DELTA | LTL2000S(Q) Retroreflectometer | 16 |