Transport Minister Gladys Berejiklian has warned there may be delays at suburban railway stations and ferry wharves as some commuters realise they cannot buy their regular ticket.

The Sydney Morning Herald has journalists at stations across the city to report on the transition to the new Opal smartcard system.

Do you have any photos or comments that you want to share? Email scoop@smh.com.au

Good morning Sydneysiders - how's your morning commute going so far?

Today is set to be a big test for the new Opal smartcard system.

Transport Minister Gladys Berejiklian expects delays at some inner-city stations as more commuters leave through gates with their Opal card.

Also, 14 types of paper tickets will no longer be sold as of today.

The "retired" ticket people are most likely to feel the lack of is the Adult Weekly MyTrain ticket.

Transport Minister Gladys Berejiklian has warned there may be delays at suburban railway stations and ferry wharves as some commuters realise they cannot buy their regular ticket.

We have reporters stationed at Hurstville, Parramatta, Strathfield, Chatswood, Redfern and Town Hall during Monday morning's peak to see how commuters are coping.

If you'd like to contribute to the discussion, please email scoop@smh.com.au or leave a comment on this blog.

I'll be at Town Hall concourse at 7.45 talking to readers about their Opal Card experience this morning. Stop and say hi. — Kathryn Wicks (@KathrynWicksSMH) August 31, 2014

So what tickets are not on sale as of this morning?

MyTrain: Adult Off-Peak Return, Adult Weekly, Adult Fortnightly, Adult Monthly, Adult Quarterly, Adult Yearly, Concession Monthly, Concession Quarterly, Concession Yearly

MyMulti: Adult Monthly, Adult Quarterly, Adult Yearly

MyFerry: Adult TravelTen

Light Rail: Adult Yearly

How many of us have already taken the plunge with the new ticketing system?

Ms Berejiklian says more than 700,000 Opal cards have now been issued, including more than 120,000 in the past fortnight.

Passengers are now taking about three million journeys each week using Opal cards.

Below, transport reporter Jacob Saulwick delivers his verdict on Sydney Transport's Opal Card.

If you're stuck in a queue, you can pass the time by taking another look at Opal's answer to Superman.

Opal Man is an unfortunate looking fellow with a piece of cardboard stuck around his head. He's occasionally pictured sitting in a park, having a good old laugh about something or other. We hope it's not Opal.

Here's some feedback from train passenger Matt:

"I get off at Emu Plains station. The average peak hour train deposits about 200 passengers. There are only two Opal card tap points. What genius did the maths on that?"

And Jen is unhappy that she'll have to set off earlier today:

@smh I don't agree that I should have to leave earlier to catch my train when I've had an opal card for months. #cityrail should b ready. — Jen (@JennabellCox) August 31, 2014

Transport Minister Gladys Berejiklian's fears of long delays for train commuters on the first morning that weekly train tickets are no longer sold have not transpired by 7.20am at Strathfield Station.

The great majority of people heading through the station have Opal cards, and the line for paper tickets is not out of the ordinary for a Monday.

Further south, and commuter Scott reports that there's no line at all at Engadine station:

@DeborahClay @GrillTeam no #opalcard chaos at my train station in Engadine. In fact, no line at all. Good stuff. pic.twitter.com/w4gEzbzDN0 — Scott Keenan (@Scott_Keenan) August 31, 2014

How is the Monday morning commute working out for you?

If you'd like to contribute to the discussion, please email scoop@smh.com.au or leave a comment on this blog.

There are mixed reactions so far from early-morning commuters:

Just tapped on with my Opal Card for the first time. It felt...oddly empowering. I really hope today's M20 buses are Opal-enabled. — Steven Savona (@Steven_Savona) August 31, 2014

well done @NSWBusInfo @131500buses Bought my opal card after all the hype and the machines on my bus dont work yet - genius! — Coconut Ninja (@mistressbex) August 31, 2014

All is running smoothly at Parramatta, which is one of the busiest stations across the network and sees more than 32,000 commuters a day.

There's no queue to buy paper tickets, or the Opal card.

Although not all commuters are satisfied with the transition.

Blaxland resident Karen Christie signed up for Opal last week but says she much preferred paper tickets.

"I have had it a week. It's never worked very good ... You put it on the barriers and it just doesn't work. It doesn't come through and you just can't get through the barriers," Ms Christie said.

Twenty-year-old Joseph Safetly, who doesn't often catch the train and buys return tickets, said he had only just learnt what Opal was but now might buy one.

"I didn't know what it was. I have been hearing [about] it on the train stations," he said.

Only a handful of people have tried to buy weekly tickets at Strathfield, to be told they are no longer for sale.

One, Nabil, had just returned from overseas.

"I had no idea," he said. "I'll just have to get an Opal card now," he added, after buying a day return.

Transport Min's fears of delays at train stations this morn have most definitely not transpired at Strathfield so far pic.twitter.com/xzyiYB6VIj — Jake Saulwick (@JakeSaulwick) August 31, 2014

At Town Hall at 7.50am, the Opal Card pop-up queue is shorter than last week.

There is one person at the old ticket window and the barriers are operating smoothly. Early days, but it is certainly
smooth sailing in the city at this stage.

Jenny from Ingleburn bought her Opal card on Friday when the queue was "much longer".

She is not yet sure if Opal will save her money and fears most being caught behind the barriers when they malfunction.

Opal card introduction was going so smoothly at Chatswood that most ticket vendors were waiting for business.

University student Kathy took a few minutes longer than usual to buy her ticket to University of Technology in the city.

"Normally I get a 20-pack fortnightly ticket but they don't do that anymore," she said.

She bought a multi for $23 instead of the usual $17.50.

Kathy, 20, said she was waiting to buy a student concession multi, which hadn't been introduced yet.

#opalcard intro going smoothly on a sunny Monday morning in chatswood pic.twitter.com/FQnDTRfmdA — Julie Power (@juliepower) August 31, 2014

The long queues anticipated by the transport minister have not materialised at Redfern station.

The longest queue by 7.50am was three people long, and station staff said the morning had gone smoothly so far.

But some customers were frustrated that they could not purchase concession Opals yet.

"I need a concession, so I have to buy a paper ticket, said Victor Schneider, from Redfern.

"I'm not happy with the Opal yet"

Annetta K, a librarian from Strathfield, had been delaying buying an Opal card for as long as possible.

"I will pay more than with my weekly ticket," she said, after obtaining an Opal card at a pop-up shop at the station.

"So this was really something I was not looking forward to," she said.

Having said that, she had no complaints about the process of obtaining the card. "It was easy."