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DUI / DWI Defense · San Bernardino County · Fontana

DUI Defense in Fontana, California

Fontana is the second-largest city in San Bernardino County with over 208,000 residents and a critical role in the Inland Empire's logistics and transportation network. Interstate 10, Interstate 15, and State Route 210 converge through Fontana, making it a major freeway corridor for long-haul trucking and commuter traffic. The Auto Club Speedway draws racing fans, and the city's commercial and industrial zones generate nightlife near distribution centers and warehouse facilities. If you've been arrested for DUI in Fontana—on the freeways or city streets—Ron Chini defends your case from his Irvine office, with a free consultation and the DMV's 10-day deadline already running.

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Ron Chini, Esq.
Reviewed by Ron Chini, Esq. · CA State Bar No. 263308 · DUI defense attorney in Irvine, CA since 2009.
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Fontana's DUI enforcement environment is shaped by three critical factors: its position at the intersection of three major freeways (I-10, I-15, and SR-210) that cut through the city, its identity as a regional logistics and trucking hub, and its own active police department. The I-10 corridor carries heavy east-west traffic linking Los Angeles to the High Desert; I-15 runs north-south from San Diego to Las Vegas; and SR-210 connects the San Gabriel Valley to the High Desert. These three arterials create constant freight and commuter flow—and with that flow comes California Highway Patrol DUI enforcement on the freeways. Within the city, the Fontana Police Department runs its own checkpoints and patrols, particularly in commercial corridors, near the Auto Club Speedway, and on major arterials like Slover Avenue and Sierra Avenue. Together, freeway and local enforcement make Fontana one of San Bernardino County's more active DUI-arrest zones.

How DUIs are policed in Fontana

Fontana operates its own Fontana Police Department and conducts regular DUI checkpoints and saturation-patrol operations, funded partly by grants from the California Office of Traffic Safety. The city also sees significant California Highway Patrol enforcement on the I-10, I-15, and SR-210 corridors that run through Fontana.

OTS Ranking: According to California's Office of Traffic Safety rankings (DRAFT — verify Fontana's current year DUI arrest and alcohol-involved collision data at ots.ca.gov), Fontana's DUI arrest and collision victim counts reflect both legitimate impaired-driving incidents and the intensity of freeway enforcement on the I-10 and I-15 corridors. As one of San Bernardino County's largest cities and a major transportation hub, Fontana experiences significant DUI checkpoint and patrol activity.

Fontana Police Department Checkpoints: The Fontana Police Department conducts regular DUI and driver's license checkpoints throughout the city, typically operating from evening hours through early morning on Friday and Saturday nights. Checkpoint locations are selected based on historical DUI arrest and collision data and are pre-announced via press releases (DRAFT — verify specific 2025/2026 checkpoint dates and locations). The department also conducts saturation patrols in high-incident areas, particularly near commercial districts, transportation corridors, and areas surrounding the Auto Club Speedway during racing events.

CHP Inland Division: The California Highway Patrol's Inland Division (headquartered at 847 E. Brier Drive, San Bernardino, CA 92408) patrols the I-10, I-15, and SR-210 corridors throughout San Bernardino County, including Fontana. These freeways are among California's busiest freight and commuter routes, and the CHP conducts both routine traffic enforcement and special DUI-operation units (DUOs) on these corridors, particularly overnight and on weekends (DRAFT — verify current CHP DUI enforcement frequency and special operation details). Any DUI arrest on the freeway route through Fontana is handled by the CHP and prosecuted at the appropriate San Bernardino County courthouse.

Where a Fontana DUI case is heard

If you were arrested for DUI in Fontana city, your case is prosecuted at the Rancho Cucamonga Courthouse (DRAFT — verify the exact address and confirm this is the correct routing for Fontana city DUI cases). All DUI cases in Fontana are prosecuted by the San Bernardino County District Attorney, not a city attorney. The Rancho Cucamonga Courthouse handles both misdemeanor and felony DUI cases for the West Valley region, including Fontana, Rialto, Ontario, Upland, and Rancho Cucamonga. For details on the courthouse, judges, and case procedures, see our Rancho Cucamonga Courthouse page.

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Where will my Fontana DUI be heard?
At the Rancho Cucamonga Courthouse (DRAFT — verify exact address and routing), the San Bernardino Superior Court's West Valley facility. Your case is prosecuted by the San Bernardino County District Attorney, not a city attorney. Misdemeanor and felony DUI hearings are conducted according to the court's published calendar. Ron represents you at every hearing.
Does the Fontana Police Department run DUI checkpoints?
Yes. The Fontana Police Department conducts regular DUI and driver's license checkpoints throughout the city, announced in advance via press release. Checkpoints target high-incident locations and are typically held Friday and Saturday nights. The department also runs saturation patrols, especially during peak enforcement periods and near the Auto Club Speedway during racing events.
Why does the CHP patrol Fontana so heavily?
The California Highway Patrol's Inland Division patrols Interstate 10, Interstate 15, and State Route 210—three of the busiest freeway corridors in California. I-10 links Los Angeles to the High Desert; I-15 connects San Diego to Las Vegas; SR-210 joins the San Gabriel Valley to the desert. These freeways carry constant freight and commuter traffic, and the CHP conducts both routine enforcement and special DUI-operation units on these corridors, particularly overnight and on weekends.
Is Fontana a high-DUI-enforcement city?
Fontana is an active DUI-enforcement city. As the second-largest city in San Bernardino County, a major freeway junction (I-10, I-15, SR-210), and a logistics hub, the city sees consistent DUI arrests from both the Fontana Police Department and the California Highway Patrol. Early, experienced legal help is essential to protect your license and your case.
Can Ron Chini defend my Fontana DUI from Irvine?
Yes. Ron's office is in Irvine, and he defends DUI cases throughout San Bernardino County, including Fontana, at the Rancho Cucamonga Courthouse and at the DMV. He handles both the court case and the 10-day DMV hearing together. Free consultation, no obligation, flexible payment plans.

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Ron Chini, Esq.
Ron Chini, Esq.
DUI Defense Attorney · CA State Bar No. 263308

Ron defends DUI cases across Southern California from his Irvine office — and works directly with you, not a call center.

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Arrested for DUI in Fontana? Let's talk.

Your free consultation is confidential and with a real attorney — no pressure, no obligation. Ron Chini is an experienced DUI defense attorney; he does not claim to be a certified specialist, and no result is ever guaranteed. He handles your Fontana DUI case at the Rancho Cucamonga Courthouse and your DMV hearing together from his Irvine office, in English or Farsi. Flexible payment plans available. Call (888) 998-6938, 7 days a week.

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