What should I do if I drop something on the metro tracks?

Press the "emergency call to monitoring center" button: metal box located on each platform or near each automatic ticketing zone or toll zone (access gates).

You will enter into intercom contact with an agent who can dispatch a response team.

Under no circumstances should you attempt to retrieve your object yourself, or go down onto the lanes, under risk of a serious accident (electrocution, shock...) and under penalty of a fine.