At Which Speed is it Safe to Drive?
Safety is the primary concern when the NTTA sets speed limits on its roadways. The NTTA conducts extensive speed studies to determine the appropriate speed limit in accordance with the procedures set forth in the state’s speed laws.
The regulatory speed limit — posted on the black-and-white speed limit signs — is recommended for driving under favorable weather and roadway conditions. Some temporary road conditions, including inclement weather (heavy rain, heavy fog or icy roads), heavy traffic or nearby construction, make driving at the posted speed limit unsafe.
Other permanent factors also may affect the safety of traveling at the posted speed limit. A sharper than usual curve in the road, limited sight distance or significant road grading all can reduce the maximum safe speed. Under these types of conditions, an advisory speed limit is recommended. Advisory speed limits are posted on black and yellow signs.
Citations may be issued to drivers for not following advisory speed limits. It’s important to note that the NTTA does not receive proceeds from traffic citations issued to drivers.
Speed limits near the end of a toll road (such as the south end of the Dallas North Tollway) are often lower than those on other sections of the roadway. These lower posted speeds are designed to ease the transition from high-speed thoroughfares to the slower speeds on city streets. State law requires the difference between two adjacent speed limits be no more than 15 mph.
Customer safety and mobility are paramount to the NTTA. The NTTA works continuously to enhance safety on its roadways by:
- Employing the latest road construction technology to guarantee the highest level of construction and maintenance of NTTA toll roads
- Providing technology solutions for a safer driving experience
- Monitoring, responding and communicating with drivers and first responders to increase roadway safety.
- Providing roadside assistance free of charge to tollway users.