Police fired tear gas at the protesters.
Police intercept 500 vehicles and hand out 300 tickets
Officers told demonstrators to move on as some climbed on their cars in the middle of the roundabout at the top of the Champs Elysees.
Police in Paris had earlier said they had intercepted at least 500 vehicles attempting to enter the capital in defiance of a police order not to take part in the protests. Police also said nearly 300 penalty tickets had been handed out by mid-morning.
More than 7,000 officers have been mobilised to various checkpoints around the city in preparation for the protests.
The police have also deployed armoured personnel carriers and water cannon trucks.
Police said five protesters had been arrested in southern Paris in possession of sling shots, hammers, knives and gas masks.
