What Is the Ontario Highway Traffic Act?

The Highway Traffic Act (HTA) is a comprehensive piece of Ontario provincial legislation that regulates nearly every aspect of road use. It sets out the rules for driver licensing, vehicle registration, traffic signals and signs, speed limits, right-of-way, impaired driving, distracted driving, and the standards that vehicles must meet to be driven on public roads.

The HTA applies to everyone who uses Ontario roads: licensed drivers, G1 holders with a supervisor, cyclists, pedestrians at crosswalks, and even riders of motorized wheelchairs in some contexts. If you are operating or using a roadway in Ontario, some portion of the HTA applies to you.

The HTA is enforced primarily by Ontario Provincial Police (OPP) on provincial highways and by municipal police services within their jurisdictions. MTO enforcement officers also conduct commercial vehicle inspections. Violations result in fines, demerit points, licence suspensions, or vehicle impoundment depending on the severity of the offence.

The HTA is provincial law. Some driving offences, such as impaired driving causing bodily harm and dangerous driving, fall under the federal Criminal Code of Canada rather than the HTA. Criminal Code offences carry more severe penalties including criminal records, longer licence suspensions, and potential jail sentences. The HTA handles the broader range of everyday traffic infractions.

The G1 written knowledge test and the BDE classroom curriculum are both based on the rules in the HTA as interpreted in the MTO's Official Driver's Handbook. Understanding what the HTA requires helps new drivers pass their tests and, more importantly, drive safely and legally throughout their lives. SafePass instructors teach the HTA rules in context during both classroom and in-car sessions.