ANGER is brewing after Sydneysiders were forced to wait over an hour to get on buses which should arrive every three to five minutes.

Incredible pictures on social media show lines of hundreds of disgruntled commuters lining up in the city’s northwest as they attempted to get to work this morning on Hillsbus services.

They lashed out at transport chiefs, who said the chaotic scenes were caused by “driver absences” after yesterday’s Melbourne Cup.

Several said they had to wait over an hour for a bus and took to Twitter to express their anger.

“#hillsbus are you serious right now? People are getting off buses but can’t get on because they’re all too full,” wrote one furious commuter. “What a waste of an hour.”

“Hills bus drivers all called in sick today after Melbourne Cup!” another wrote. “Unacceptable! Someone needs to get sacked! 1 hour wait!”

“The most ridiculous line for the #hillsbus ever @transportnsw,” wrote another. “20 mins and less than a handful of buses turn up, let alone take passengers.”

#hillsbus are you serious right now? People are getting off busses but can't get on because they're all too full. What a waste of an hour. pic.twitter.com/3NkvdrFxis — no way Rosé (@whatbrickroad) November 6, 2018

#transportnsw #oaksroadm2 #hillsbus long line all the way down the tunnel . People waiting we need more buses pic.twitter.com/mcTPYvn0S7 — Angel (@angelspinky) November 6, 2018

Hillsbus services are currently experiencing disruptions due to an unexpected level of driver absences. Delays may be experienced. Allow plenty of extra travel time. — Buses North West (@BusesNorthWest) November 6, 2018

The situation wasn’t helped when transport information service Buses North West tweeted at 8am — to tell customers of the disruptions.

“Hillsbus services are currently experiencing disruptions due to an unexpected level of driver absences. Delays may be experienced,” a spokesman for the service wrote. “Allow plenty of extra travel time.”

However, many said it was too little, too late.

“It’s a bit late to be telling us now!!!!,” wrote one angry Sydneysider in response.

“Allow extra time on top of the 1.5 hours you’ve been waiting?” wrote another. “This information would’ve been fresh at 6.30am #asleepatthewheel.”

A Transport for NSW spokesman told news.com.au said it apologised to customers for what happened this morning.

“A larger than expected number of drivers called in absent at CDC’s Hillsbus depot in Sydney’s North West this morning,” he said.

“This has unfortunately resulted in a number of delays and cancelled services and Transport for NSW apologise to customers impacted.

“We are working with Hillsbus to ensure that as many trips as possible are covered for the remainder of the day.”