Should I waive my preliminary hearing in a Delaware County DUI case?

Last updated October 4, 2026.

If you are applying for Delaware County DUI-ARD, yes: the District Attorney's ARD application requires every DUI-ARD applicant to waive the preliminary hearing, formal arraignment and all pretrial motions. If ARD is unlikely, keeping the hearing deserves a hard look, because it is your first chance to hear the officer under oath and to ask a judge to dismiss weak charges. The right answer depends on which path your case is on.

This page explains what the hearing is, what a waiver means under the Pennsylvania rules, and how Delaware County ties the waiver to ARD. For the full DUI timeline, see what happens after a DUI arrest in Delaware County. Penalties are on our main DUI defense page.

What happens at the preliminary hearing if I do not waive it?

Delaware County's Public Defender explains that adult criminal cases "start with a preliminary hearing in the Magisterial District Court where the crime allegedly occurred," and the county has 26 of those courts. Unless a represented defendant waives it, the hearing must be set no later than 14 days after the preliminary arraignment if you are in custody on that case only, and no later than 21 days otherwise, unless extended for cause (Pa.R.Crim.P. 540(G)). To find the court for your case, see which Delaware County district court will hear your preliminary hearing.

At the hearing the district judge decides only whether there is a prima facie case: that an offense was committed and that you committed it (Rule 542(D)). You may be represented, cross-examine witnesses, inspect the physical evidence, call witnesses and testify (Rule 542(C)). If the Commonwealth makes out a prima facie case on some charges, you are held for court on those; if on none, you are discharged (Rule 543(B)). Our page on what happens at a preliminary hearing in Pennsylvania covers the hearing in more detail.

What do I give up by waiving it?

Rule 541 controls waivers. Only a defendant who is represented by counsel may waive at the preliminary arraignment (541(A) and (B)). Once you waive:

• You are "precluded from raising the sufficiency of the Commonwealth's prima facie case" later, unless the parties agreed at the time of the waiver that you may challenge it (541(A)(1)).
• You and your lawyer certify in writing that the district judge told you of the right to a hearing, that you understand you cannot later challenge the prima facie case, and that you consent to be bound over to court (541(C)).
• The case goes to the Court of Common Pleas and, apart from a reinstated hearing, "shall not be remanded" to the district court (Rule 543(G)).

In practical terms you lose a recorded look at the officer's account before trial and the chance that some charges are dismissed early.

A waiver also moves a few things to that day. When the case is held for court, the district judge sets bail if you never had a preliminary arraignment, as happens in many summons cases, and can make fingerprinting a condition of bail if it has not been done (Rules 541(E) and 543(C)). Our page on how bail works in Pennsylvania explains the kinds of release.

Why does Delaware County require a waiver for DUI-ARD?

The county's ARD application describes DUI-ARD as cases "where only DUI and related traffic offenses are charged and there has been no crash indicated in the affidavit of probable cause." For those cases the waiver comes with several benefits written into the same document:

The application also warns that "once a preliminary hearing is waived, a defendant is not entitled to remand back to district court." Before relying on ARD, confirm that you are likely eligible; our page on ARD eligibility after a DUI in Delaware County lists the state and county limits.

What if I waive and ARD does not happen?

The rules give some protection. If you waive "by way of an agreement, made in writing or on the record, and the agreement is not accomplished," you may still challenge the sufficiency of the Commonwealth's prima facie case (Rule 541(A)(2)). If the right to a preliminary hearing is later reinstated, that hearing is held in the Court of Common Pleas unless the parties agree otherwise with the judge's consent (541(D)). The ARD statute adds that if a defendant does not complete ARD and goes to trial, any waiver or acknowledgment "offered or required under this section shall be of no effect and shall not be used against the defendant" (75 Pa.C.S. 3807(g)).

That is why the terms of a waiver matter. A waiver that is written up as part of an ARD agreement preserves more than an unconditional one.

How does the waiver work in Delaware County, step by step?

1. Before the hearing date. Hire a lawyer, confirm likely ARD eligibility, and send the ARD application so it reaches the DA by the preliminary hearing date if you want a chance at an expedited SIDETRACK date.
2. At the district court. With your lawyer, you sign the written waiver certification required by Rule 541(C), and the case is bound over to the Court of Common Pleas.
3. Right after. Schedule the CRN evaluation and safe driving classes, aiming to finish before formal arraignment to halve the recommended community service.
4. At least 14 days before formal arraignment. The application, the Entry of Appearance and Waiver of Arraignment form and the ARD Rule 600 waiver go to the Court Administrator.
5. The next months. The pretrial conference is set about six months after formal arraignment while the DA decides; if the DA accepts the case, the ARD hearing follows.

Every step after the waiver happens at the Courthouse complex in Media, described in what to expect at the Delaware County Courthouse.

When does keeping the hearing make sense?

• ARD is not available, for example because of a prior DUI within ten years, a child under 14 in the car or a crash with serious injury (75 Pa.C.S. 3807(a)(2)).
• There is a real question about the stop, the identity of the driver or the test, and hearing the officer's sworn account early would help.
• The charges include more than DUI and related traffic offenses, which falls outside the county's DUI-ARD description.
• There was a crash in the affidavit of probable cause, which also falls outside that description; see what happens when a DUI involves a crash with injuries.

What changes the answer?

• Likely ARD eligibility. A waiver makes most sense when ARD is realistic; the statutory bars in 3807(a)(2) and the county's list decide that.
• The strength of the evidence. Questions about the stop, the driver's identity or the timing of the test, explained in the two-hour rule for DUI tests, are reasons to hear the officer under oath.
• Whether you have a lawyer. An unrepresented defendant may not waive at the preliminary arraignment (541(B)), and the county will not consider an unrepresented ARD applicant.
• How the waiver is written. A waiver made by a written or on-the-record agreement that is not carried out leaves the prima facie challenge open (541(A)(2)).
• Custody. A person held in jail on this case only gets the hearing within 14 days, so the decision comes faster (540(G)).
• The county. Montgomery County's DA also says applicants generally waive the preliminary hearing and formal arraignment, but its timing differs; compare them in DUI ARD in Delaware, Chester and Montgomery counties.

For example: waiving early for a first DUI

Here is a hypothetical. A driver with no record is charged with a first DUI at 0.11% after a stop in Springfield Township, with no crash and no passengers. The summons lists a preliminary hearing about three weeks out. The driver hires a lawyer the first week, the ARD application reaches the DA before the hearing date, and at the district court the driver and lawyer sign the waiver certification. Because the case began by summons, the district judge sets bail that day.

The driver completes the CRN evaluation and the safe driving classes before formal arraignment, cutting the recommended community service in half, and the arraignment waiver and Rule 600 waiver are filed 14 days early. If the DA accepts the application, the case goes to an ARD hearing. If the DA unexpectedly rejected it, the waiver's terms would decide what challenges remain, which is why it was written up as part of the ARD plan. This example is only an illustration; every case depends on its own facts.

What mistakes do people make with the waiver decision?

• Deciding at the courthouse door. The SIDETRACK benefit depends on the application reaching the DA by the hearing date.
• Waiving when ARD is barred. A prior DUI within ten years, a child under 14 in the car or a serious-injury crash rules out ARD under 3807(a)(2).
• Signing an unconditional waiver. Without an agreement on the record or in writing, the prima facie challenge is gone (541(A)(1)).
• Expecting to return to the district court. After the case is bound over it is not remanded (543(G)).
• Missing the 14-day filing. The waiver of the preliminary hearing does not replace the paperwork due before formal arraignment.
• Skipping the hearing without waiving. An unexcused absence after notice counts as a waiver of the right to be present and can lead to a warrant (543(D)).

What should I do this week?

1. Find the hearing date and district court on your summons or bail papers.
2. Write down any prior DUI or diversion, any passengers, and whether there was a crash.
3. Talk with a lawyer about ARD eligibility and the evidence before the hearing date.
4. If ARD is the plan, get the application to the DA before the hearing and arrange fingerprinting.
5. Schedule the CRN evaluation early.
6. Keep the rest of the first days organized with our first-week checklist after a DUI arrest in Delaware County.

If ARD is the likely result, waiving early usually saves time and community service hours. If you are deciding between ARD and trial, read whether to accept ARD or fight a DUI before the hearing date.

Frequently asked questions

Can I waive the preliminary hearing without a lawyer?

Not at the preliminary arraignment (Rule 541(B)), though the rule's comment says a person who chooses to proceed without a lawyer may waive later. For Delaware County DUI-ARD, a lawyer is required anyway.

Does waiving the hearing mean I am pleading guilty?

No. A waiver concedes only that the Commonwealth has enough evidence to send the case to the Court of Common Pleas. You still have every defense at trial, and ARD ends without a conviction.

Can I change my mind after waiving?

Generally not; the case is not remanded once bound over (543(G)). If the right to a hearing is later reinstated, the hearing is held in the Court of Common Pleas unless the parties and judge agree otherwise (541(D)).

Will the DA show me the evidence if I waive?

For DUI-ARD, the county's application says the assistant district attorney will, if able, provide your driving history, FBI rap sheet and any lab report at the preliminary hearing. Full discovery comes later in the Court of Common Pleas.

What if I waive and then the DA says no to ARD?

The case continues to a trial team. What you can still challenge depends on how the waiver was made (541(A)(2)), and 3807(g) keeps any ARD waiver or acknowledgment from being used against you at trial. Our page on whether to accept ARD or fight a DUI covers that path.

Call Giribaldi Law at (610) 891-8303 or contact us online for a free consultation before your preliminary hearing. Our office is across from the Delaware County Courthouse.