Dallas speed limits start at 30 mph on any city street and 15 mph in alleys unless a sign posts something different, with highways through the city generally running 55 to 70 mph, school zones dropping to 20 mph when active, and construction zones carrying their own posted numbers and doubled fines. Those baselines come from the Texas Transportation Code and Dallas City Council ordinances, and the real cost of a ticket runs well past the fine on the citation once court fees, points, and insurance increases are factored in.
Default Limits on Dallas Streets
Texas Transportation Code Section 545.352 sets “prima facie” speed limits that apply automatically wherever no sign says otherwise. In an urban district like Dallas, that means 30 mph on any street and 15 mph in an alley.1State of Texas. Texas Transportation Code Section 545.352 – Prima Facie Speed Limits The “prima facie” label matters legally: exceeding the number creates a presumption that your speed was unreasonable. You can argue the point in court, but on a standard city street that defense rarely goes anywhere.
There’s a second rule sitting on top of the posted limit. Section 545.351, the “basic speed law,” lets an officer cite you for driving faster than is reasonable for current conditions even if you were technically under the sign.2State of Texas. Texas Transportation Code Section 545.351 – Maximum Speed Requirement It comes up most often after wet-weather crashes where the driver was technically legal but clearly moving too fast for the rain.
The Dallas City Council can raise or lower the default on any street after an engineering and traffic investigation, then passes an ordinance and posts new signs.3American Legal Publishing. Dallas Code of Ordinances SEC 28-47 – Maximum Speed Limits; Determination That’s why two residential streets in the same neighborhood can carry different numbers. One was studied and adjusted; the other still sits at the default. Read the signs.
Highways and Toll Roads
Dallas’s freeway corridors, including I-35E, I-30, I-635, and US-75, are posted between 55 and 70 mph depending on the segment. Numbered state and U.S. highways default to 70 mph outside urban districts, but limits inside Dallas are typically set lower after engineering review.1State of Texas. Texas Transportation Code Section 545.352 – Prima Facie Speed Limits Stretches near downtown and major interchanges tend to sit at 55 or 60 mph, while outer segments push toward 65 or 70. Dallas has also lowered limits on several busy corridors in recent years, so a stretch you remember as 70 may now be posted at 65.
The Dallas North Tollway and other roads managed by the North Texas Tollway Authority operate under their own posted limits, set by the NTTA Board after safety reviews. On the Dallas North Tollway, the southern stretch up to Oak Lawn Avenue is posted at 50 mph, while the segment from Oak Lawn to I-635 runs at 65 mph.4North Texas Tollway Authority. NTTA Increases DNT South End Speed Limits Following Construction Limits can change abruptly at the boundary between a public freeway and a tollway.
A 2023 state law gave the Texas Transportation Commission authority to deploy electronic signs that temporarily lower posted limits during hazardous conditions like ice, heavy rain, or congestion. The reduction can be no more than 10 mph below the normal limit, and it’s only enforceable when the digital sign is actively displaying the lower number with advance warning posted at least 500 feet ahead.5Texas Legislature. HB 1885 – Bill Text A digital sign showing a lower number carries the same legal weight as a permanent one.
School Zones
School zones across Dallas are restricted to 20 mph when active. A zone becomes enforceable during the time windows posted on the sign or whenever the amber flashers are operating, which generally means morning arrival and afternoon dismissal on school days. Times vary by school, so read the sign at each zone rather than assuming a universal schedule. Dallas police enforce these aggressively.
Texas also bans handheld wireless device use in active school zones. You cannot text, browse, scroll, or hold a phone to your ear while moving through a zone with flashing signs. Hands-free devices are allowed, and you can use a phone if the vehicle is completely stopped.6State of Texas. Texas Transportation Code TRANSP 545.425 The phone violation is a separate citation from speeding, so a single pass through a school zone can produce two tickets.
Construction and Work Zones
Construction zones post their own reduced limits, and the financial consequences for ignoring them are steep. Under Texas Transportation Code Section 542.404, when workers are present and the citation notes that fact, both the minimum and maximum fine for any traffic violation in the zone are doubled.7Texas Public Law. Texas Transportation Code Section 542.404 – Fine for Offense in Construction or Maintenance Work Zone For speeding specifically, the doubling only kicks in when the zone is marked with a sign showing the applicable speed limit.
The “workers present” piece is the trigger. Driving through a work zone at 2 a.m. when no crew is on site doesn’t invoke the doubled-fine provision, though the posted zone limit still applies. Enforcement concentrates on daytime hours when crews are near live traffic.
What a Speeding Ticket Actually Costs
Speeding tickets in Dallas run through the Dallas Municipal Court. The base fine for a standard traffic misdemeanor tops out at $200 under state law.8Texas Public Law. Texas Transportation Code Section 542.401 – General Penalty What you actually pay is higher once mandatory state court costs are stacked on. As a rough guide:
- 1 to 10 mph over in a normal zone: roughly $200 to $250 total
- Higher speeds: $250 to $350
- Work zone with workers present: often over $400 once the fine component is doubled7Texas Public Law. Texas Transportation Code Section 542.404 – Fine for Offense in Construction or Maintenance Work Zone
A speeding conviction also adds two points to your Texas Department of Public Safety driving record, or three if the violation involved a crash. One point drops off for every consecutive 12 months with no new moving violations. Points affect your record but don’t trigger an automatic license suspension at any fixed threshold.
The expense that catches most drivers off guard isn’t the ticket. It’s the insurance increase. A speeding conviction stays visible to insurers for several years, and Texas drivers see an average premium bump of roughly 7% after a single ticket, with some carriers raising rates more aggressively. Applied across years of premiums, that number typically dwarfs the fine.
Keeping a Ticket Off Your Record
Dallas offers two main paths to avoid a conviction: a defensive driving course and deferred disposition. Both require action before your court deadline. Ignoring the ticket forecloses both.
Defensive Driving Course
Under Texas Code of Criminal Procedure Article 45.0511, you can ask the court’s permission to take a state-approved six-hour driving safety course in exchange for dismissal. To qualify, you need a valid Texas driver’s license (or military assignment in Texas) with current auto insurance at the time of the offense, a speed under 25 mph over the limit, no course dismissal in the prior 12 months, and no CDL ticket in a commercial vehicle. Offenses in a work zone with workers present are ineligible.
You’ll typically plead guilty or no contest, pay a court administrative fee, and submit your certificate and driving record by a firm deadline. The minimum course fee allowed by state law is $25 plus applicable fees.9City of Dallas. Deferred Disposition
Deferred Disposition
Deferred disposition is a probation-like arrangement. You pay the fine upfront and agree to meet conditions over a set period. Complete the terms without new violations and the court dismisses the charge, with no conviction reported. You can request it online, by mail, or in person at the Dallas Municipal Court at 2014 Main Street. Online and mail requests take five to seven business days for a response.9City of Dallas. Deferred Disposition
The same ineligibility rules apply as with defensive driving: CDL holders, work-zone offenses with workers present, and speeds 25 or more over the limit all require appearing before a judge rather than using the standard request. Defaulting on the terms leads to a show-cause hearing, and failing that hearing means a conviction is reported to DPS.
If You Ignore the Ticket
Missing the deadline compounds the problem fast. The court can add fines and fees and issue an arrest warrant. On top of that, the Texas Department of Public Safety can block your driver’s license renewal under the Failure to Appear/Failure to Pay program until every outstanding citation is cleared.10Texas Department of Public Safety. Failure to Appear/Failure to Pay Program You often find out about the hold only when you try to renew, and by then you owe the original ticket plus everything that piled on. Handling the citation early, even if that means asking for a payment plan, is always cheaper.
No Speed Cameras
Dallas does not use automated cameras to catch speeders. Texas banned photographic traffic enforcement statewide in 2019 under Transportation Code Chapter 707.11Texas State Law Library. Traffic Enforcement A grandfather clause let a handful of cities keep existing systems until their contracts ran out, but no new cameras can be installed. Every speeding citation in Dallas comes from an officer who observed the violation, using radar, lidar, or pacing.