Metro Transit says suitcases are allowed on the new Halifax airport bus, but it's up to drivers to decide if there's room for them.

The transit service took another look at the luggage policy this morning, as the first bus run to the airport got underway.

"Airport travellers have spoken! Luggage allowed provided passengers can safely, handle and stow their bags," Metro Transit tweeted.

Metro Transit had planned to allow only carry-on bags on buses. It cited safety regulations under the Motor Carrier Act that banned large bags.

A furor erupted on social media sites overnight.

Metro Transit now says larger bags are acceptable as long as they're kept out of the aisle or placed on an open seat.

Basically, it comes down to the driver's assessment of whether there is space for large bags. If not, the luggage won't be allowed on the bus.

Director Eddie Robar said they may add luggage storage on the buses if there's a demand for it.

However, he said, it could be 18 months before they know whether the route is more of a commuter service for Fall River residents, which would mean no luggage storage because of the need for more seats.

The airport-bound route begins near Scotia Square in downtown Halifax. It includes stops at the Dartmouth bridge terminal, the new park-and-ride lot in Fall River and the Aerotech Business Park.

Metro Transit says the trip to the airport from downtown Halifax takes about 50 minutes.

The bus runs every 30 minutes during peak hours on weekdays. Otherwise, service is every hour.

A one-way bus pass on MetroX 320 is $3.25. A monthly pass is $100.