Street parking in Vilnius is divided into three colour-coded zones, namely red, yellow and green. Spending 1Lt will buy you 20 minutes in the red zone, 30 minutes in the yellow zone, and 60 minutes in the green zone. Parking meters (colour coded, so you know how much to pay) eat coins and regurgitate a little printed ticket. Times when payments are required are marked on blue signs using Roman numerals to represent days, and numbers to represent times. A sign which displays I-V 8-22 for example means you must pay to park on Monday (I) to Friday (V) from 08:00 to 22:00. Signs can be hidden or placed miles away from the parking space in question. Be careful. A pay-by-SMS system is also in operation, although in order to use it you must have a local mobile phone SIM card. Buy a bar-coded windscreen sticker and register it in order to use this service if you’re planning on living in the city or staying for an extended period of time. Keep valuables hidden at all times, including radios if possible. Car crime rates are high in Lithuania. Use guarded parking facilities at all times if you can, especially when parking a car overnight.