Traffic was already heavy near the Greville Road on-ramp just after 6am on Friday.

Up to 100,000 commuters will be finding a new way to get to work as Auckland roads are expected to be chaotic

With more than 1000 bus drivers across Auckland striking on Friday, Auckland roads at rush hour times will likely be severely clogged.

And to make matters worse - for the morning commute at least - the roads will be wet, with rain expected overnight and lasting until about 9am.

JASON DORDAY/FAIRFAX NZ Bus drivers began taking industrial action in Auckland on Wednesday, causing disruptions for passengers.

Stuff will be providing rolling updates throughout the day as traffic increases.

Here's what you need to know:

How long will the strike last?

The strike starts at 4am on Friday and finishes at 4am Saturday.

READ MORE:

* Wet weather expected to hinder commuter traffic during Auckland's bus strike

* Auckland bus drivers to strike, thousands of commuters affected

* Delays to bus services around central Auckland

* Auckland bus services to be cancelled under union action

Which services are affected?

No NZ Bus Auckland services will operate during the strike which includes its Metrolink, North Star, Waka Pacific and Go West services.

Howick & Eastern also has 89 bus drivers striking.

What about the link buses, will they run?

Nope. The city, inner and outer link buses are operated by NZ Bus so those services will be out of action.

How can I find out whether my bus will run?

AT is responsible for the operation of Auckland's bus network so that is the best first point of contact.

How will my kids get to school?

AT said its main priority was to maintain the running of about 120 school buses affected by the industrial action.

What do I tell my employer if I can't get to work?

Employers and Manufacturing Association chief executive Kim Campbell advised workers to talk to their employer about the affect of the strike beforehand.

Working from home could be an option for a lot of people on Friday but that should be agreed on with employers beforehand.

Should I take my car to work?

With nearly 100,000 commuters expected to be left stranded by Friday's strike, many commuters will opt for driving to work in their cars.

This could put enormous strain on Auckland's already choked up roads, plus you'll have to think about parking.

Anyone driving to work on Friday should leave home much earlier than usual to avoid delays.

Why are bus drivers striking?

Bus drivers are asking for a pay rise and better work conditions in relation to toilet breaks and the break period between split shifts.

NZ Bus northern chief operating officer Shane McMahon said its drivers were paid $20.40 an hour plus overtime.

It was offering another 35 cents an hour increase but the unions were not accepting that.

Regarding toilet breaks, he said drivers did get short breaks between trips with time to go to the toilet.

NZ Bus had also asked AT for more toilet facilities where buses terminate.

Is this going to happen again?

It's already happened twice this month so unless the unions and bus companies can reach an agreement expect more strikes in the future.