There are 4 zones indicated by signs on parking boxes located at even intervals along the street: zone 1 (red - 70 8211), zone 2 (blue - 70 8212), zone 3 (green - 70 8213) and zone 4 (yellow - 70 8214). You get a ticket at the box under the parking sign or use your mobile phone to pay by sending an SMS with your registration number (no gaps) to the number shown on the box (remember to include the international dialing code if you're using a foreign mobile). A few minutes before your hour of paid parking runs out, you'll get a message to remind you to refresh your lease of the space or move your car.