What is the designated maximum speed for passenger cars on “through streets” or boulevards clear of traffic?

The designated maximum speed for passenger cars on “through streets” or boulevards clear of traffic is established based on guidelines to ensure safe and efficient travel. In many jurisdictions, this speed limit is set at 40 kilometers per hour (kph). This limit is a balance that promotes smooth traffic flow while minimizing risks associated with higher speeds.

At 40 kph, drivers have sufficient reaction time to respond to potential hazards that may arise, especially in environments where pedestrians might cross or where vehicles may enter the road unexpectedly. Setting the speed limit higher could compromise safety, while setting it too low could lead to congestion and frustration among drivers.

In areas designated as "through streets" or boulevards, this speed limit helps maintain a consistent flow of traffic while still ensuring that the roadway is safe for all users, including cyclists and pedestrians. Additionally, regulations often take into account factors such as road geometry, width, and expected traffic volume, which further support the reasoning for a 40 kph limit in these specific contexts.