Phoenix applies a 25 mph default on residential streets under Arizona law, with major arterials posted at 35 to 45 mph and urban freeways at 65 mph. Photo-enforcement cameras returned to city streets in 2026 after a long absence.
Phoenix speed limits at a glance
| Road type | Limit |
|---|---|
| City streets (default) | 25 mph (40 kph) |
| Residential / school zones | 25 mph (40 kph) |
| Major roads / arterials | 40 mph (64 kph) |
| Highways through the city | 65 mph (105 kph) |
About speed limits in Phoenix
Phoenix follows the Arizona default of 25 mph on residential and business-district streets where no other limit is posted, so most neighborhood streets carry 25 mph even without a sign. Arizona also sets a 15 mph default near schools when children are present. Larger arterials across the city are commonly posted between 35 and 45 mph based on engineering studies, and Phoenix has approved targeted reductions on selected corridors to improve safety.
Photo radar has a long and contested history in Phoenix and Arizona. Arizona once ran a statewide freeway photo-enforcement program that was ended in 2010, and Phoenix's own cameras went dormant for years amid political and legal pushback. In 2026 the city relaunched a Photo Safety Program, returning speed cameras to Phoenix streets in February with a 30-day warning period before citations began, framed as a cost-recovery safety effort rather than a revenue source.
Residential streets default to 25 mph, and school zones drop to 15 mph when children are present, among the strictest in the country. Under Arizona rules, fixed photo radar may operate only on arterials and highways posted at 55 mph or higher, so Phoenix's newer safety cameras concentrate on higher-speed corridors plus rotating school-zone cameras. The program rotates corridor locations roughly every six months and school-zone cameras weekly.
Freeways through Phoenix, including I-10, I-17, Loop 101, and Loop 202, are generally posted at 65 mph within the metro area, with I-17 raised to 65 mph on segments that were previously lower. Arizona's rural interstate defaults reach 75 mph, but urban Phoenix freeways stay at 65. Freeway speed enforcement is handled largely by the Arizona Department of Public Safety rather than city cameras.
Enforcement
Phoenix uses both officers and photo enforcement. The city relaunched its Photo Safety Program in 2026 with speed cameras on higher-speed corridors and rotating school-zone cameras, while Phoenix Police patrol streets and Arizona DPS covers freeways.
Tolerance
Phoenix photo-safety cameras issue citations for drivers going 11 mph or more over the posted limit, so a 35 mph zone triggers at about 46 mph. Officers apply discretion, but Arizona has no fixed legal buffer.
Speeding fines in Phoenix
Arizona speeding fines vary by court and speed, typically running from around 150 to over 300 dollars once surcharges are added. Photo-radar citations follow the state civil-fine structure, and the Phoenix program is run as cost-recovery rather than for revenue.
Frequently asked questions
What is the speed limit in Phoenix?
Phoenix residential streets default to 25 mph under Arizona law, major arterials are posted at 35 to 45 mph, school zones drop to 15 mph, and urban freeways are 65 mph.
Does Phoenix have photo radar?
Yes, again. After years dormant, Phoenix relaunched its Photo Safety Program in 2026 with speed cameras on higher-speed corridors and rotating school-zone cameras, following a 30-day warning period.
How do speed cameras work in Phoenix?
Phoenix photo-safety cameras cite drivers going 11 mph or more over the limit. Under Arizona rules fixed cameras run on roads posted 55 mph or higher, while separate cameras cover 15 mph school zones.
Are there higher limits on Phoenix freeways?
Yes. Freeways such as I-10, I-17, Loop 101, and Loop 202 are generally posted at 65 mph in the metro area, mostly enforced by Arizona DPS rather than city cameras.
More Arizona speed limits
- Arizona speed limit — statewide interstate, highway, and city limits.
Related tools
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- US speed limits overview — federal background and national patterns.