Crime has been increasing in the Halifax area, and some dangers are worth mentioning. Some instances of swarming - groups of people harassing, robbing or assaulting persons - have been reported. Be especially careful around the certain areas around the North End of the city, especially near Gottingen Street and the Halifax Commons at night. In most cases, common sense should suffice.
Pedestrian crosswalks are highly respected by drivers in Halifax, and crossings can occur just about anywhere. This provides a double danger: For drivers to keep on the ball watching out for pedestrians; and for pedestrians to not be lulled into a false sense of security while crossing.
Rapidly changing weather means that black ice abounds in winter, and it's particularly nasty when combined with the city's hilly topography. Choose your steps and drive carefully.