Lieutenant Christopher Diapiazza of the Scottsdale Police Department presented an overview of the city’s traffic enforcement programs, including staffing, DUI teams, motorcycle units, crash‑reconstruction detectives and the city’s photo‑enforcement system.

Diapiazza said the department’s general patrol staff numbers about "a 160 officers" and that the dedicated traffic enforcement section includes DUI, two motorcycle squads and a crash reconstruction unit. He told commissioners the photo‑enforcement program has "11 static locations at 10 intersections" and "4 mobile photo enforcement towers," and that program placement is rotated based on crash and speed data.

On public concerns about who issues camera tickets, Diapiazza directly addressed a community perception that a third party issues citations: "It is not a third party issuing the citations. It is a police department employee, at times police officers who are issuing those citations." He said a program manager reviews photo data and the department issues either citations or administrative notices of violation depending on identification and other review factors.

The presentation covered enforcement priorities and outreach. Motorcycle units target speed and red‑light violations and are used for school‑zone and distracted‑driving enforcement. Diapiazza described saturation DUI details coordinated with the Governor’s Office of Highway Safety and the East Valley Task Force. He also explained an outreach program, "know your limits," which uses portable breath tests to provide immediate feedback to people near entertainment districts.

Commissioners pressed for clarity about distracted‑driving detection and the difference between traffic stops and citations. Diapiazza said motorcycle officers can more easily see into vehicle cabins to spot phone use "and they'll just be behind somebody and they'll see them playing on their phone," then make a stop when necessary. He noted the state’s distracted‑driving statute targets cell phone holding and manipulation; other dangerous driving behaviors are cited under separate traffic statutes.

On e‑bike enforcement, Diapiazza said the city uses a code and an identification flowchart posted on the city website to classify class 1/2/3 devices and to guide officers during stops. He clarified enforcement limits: "If they're operating on private property, police officers aren't going to, they can't do enforcement on private property. Once they hit public right away, public sidewalks, public roadways, then they can start pulling people over if they, violate the law."

The presentation included data‑driven deployment and education goals; Diapiazza emphasized behavior modification as the program objective rather than revenue generation: the warning signs required by state law and rotating enforcement are intended to reduce speeds and crashes.

Next steps noted by staff: provide trend data over multiple years (a commissioner requested historical trends adjusted for population) and have the program manager provide thresholds and administrative‑review details for photo enforcement notices.

The commission did not take any formal action on enforcement policy at this meeting; the session closed with additional commissioner questions and staff follow‑up commitments.