The source claims that the organization of the Monaco Grand Prix differs in several ways from that of every other Grand’s Prix on the Formula 1 calendar. First practice for the race is held on the Thursday preceding the race, not Friday as for all other Formula One races.
Monaco is currently the only Formula 1 race held in the centre of a town, so having first practice on the Thursday allows the streets to be opened to the public again on the Friday, helping ease the disruption caused by the event. Until the late 1990s the Monaco Grand Prix started at 3pm local time – an hour later than other European Formula One races. In recent years the race has fallen in line with the other races for the convenience of television viewers.
There is no podium as such at the race. Instead a section of the track is closed after the race to act as parcfermé (closed park), a place where the cars are held for official inspection. The first three drivers in the race leave their cars there and walk directly to the royal box where the ‘podium’ ceremony is held, a location much closer to the crowd than at other races.
Other some reports says that businesses and parts that are only accessible by some of those roads
Friday was traditionally market day there, public’s needs to use Friday to access the roads for the goods transportation and the common purpose or Monaco GP track is a public road and they can’t close this continuously three days.
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