IIJIMA Hiromitsu wrote:
> However, you can get an "Safety Driver (S.D.) Card" from your prefecture's
> Driving License Center. Order an "unten keireki shoumeisho" (certificate
> of driving career) or a "mujiko muihan shoumeisho" (cerficate of no-crash
> no-violation period), and you'll get an S.D. Card with the certificate.
> 
> In addition, if you pass 5 years with no crash and no violation, your
> driving license card will be marked in gold.

Thanks for your help.  This also possibly explains the origin of the
phrase "safety driver" to me.  (When people said they were safety
driver, I thought they just meant they were safe drivers.)