A series of minor crashes are causing traffic problems across parts of Auckland today.

A car flipped, blocking the left lane of the southern motorway city bound just before the Takanini off-ramp.

TIME SAVER TRAFFIC: Listen to the latest Auckland update

The crash is now cleared, but NZTA tweeted that traffic is heavily congested from Drury to Takanini.

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And an earlier on crash on Upper Harbour Highway is partly blocking the left lane, westbound after Caribbean Drive.

Motorists are advised to pass with care.

In Takapuna, a two-car crash at the intersection of Taharoto Rd and Fred Thomas Dr is blocking lanes.

A fire service spokesman said two people have moderate injuries and three people have minor injuries as a result of the accident just before 8.15am.

Oil is being cleared from the road, he said.

Another crash on the North Western Motorway blocked the right lane, city bound, after St Lukes.

The crash is now clear, but traffic is heavy from Te Atatu, according to NZTA.

https://twitter.com/NZTAAkl/status/788084839425699840