Смайлик что означает? / What does the smiley face mean here?

Quote (Мих@N, 10.09.2018):
> Смайлик что означает? <

Он сообщил, что автомобиль был низкопольным. Он использовался в то время, когда эти трамваи были новыми, а не больше.

I see. I thought the wheelchair sign (which is near the face) was used to point out that this is an easy-access vehicle, usually LF vehicles are designated only by this sign.
P. S. Google translate?:) It's totally fine to use just English though:)

Quote (Мих@N, 13.09.2018):
> I see. I thought the wheelchair sign (which is near the face) was used to point out that this is an easy-access vehicle, usually LF vehicles are designated only by this sign.
> P. S. Google translate?:) It's totally fine to use just English though:)

Yes, google. I do not have a Russian keyboard :)
Smiley was used until 2011 in combination with a wheelchair symbol only on this type of tram. Since 2011, only wheelchair symbols have remained, as on all other vehicles.

It was said that the smiley was used to make it easier for passengers to distinguish the low-floor kit from the high-floor at a time when such a solution was new in Pilsen :)