Crunch, clank and thwack. Those sounds might be familiar to any motorist who has had to navigate the new raised crossing at the entrance to Dunbar St.

Scrape marks from striking the crossing.

In about half an hour this week, the Otago Daily Times saw at least five motorists scrape the bottom of vehicles.

The crossing is part of the Dunedin City Council's $57,000 safety improvements installed in Dunbar St, beside the Dunedin Courthouse.

Two more speed humps, of different design, have been installed down the street.

Council transportation team leader Hjarne Poulsen said the council had received some comments, which was usual with new traffic-calming measures.

The raised crossing was steep but could be traversed without scraping if it was taken at the recommended speed, Mr Poulsen said.

Two signs on the street adjacent to the other humps say 25kmh.

The area would continue to be monitored but the council was comfortable the design had improved safety for drivers and pedestrians, as was intended, he said.

Pedestrian use of the street was expected to increase with the reopening of the courthouse and the speed humps encouraged drivers to slow down.

Motorists scrape the bottom of their vehicles as they drive over the raised crossing in Dunbar St this week. PHOTOS: PETER MCINTOSH