At the pharmacy in Deventer you buy painkillers. There is no yellow sticker on the box, but the leaflet says they can make you drowsy. You take one and then want to drive home. What do you do?
You just drive: without a yellow sticker the medicine is safe
You do not drive as long as the medicine can make you drowsy
You wait a few hours; one pill will be out of your body by then
Explanation
False — you think one pill is out of your body after a few hours. Some medicines keep working for up to 48 hours, even if you take them only once. You drive again only when the medicine can no longer make you drowsy (book p. 16).