Lawyers for Speed Camera Challenge
Defense based on challenging the validity of speed camera and radar measurements.
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Speed camera readings (fixed radars, mobile radars, and section control cameras) are subject to strict homologation and calibration requirements. Any failure to comply with these technical specifications can render the measurement invalid as evidence, resulting in dismissal of the speeding charge.
Legal Framework: Homologation and Calibration
Our defense examines: device homologation (the radar must be approved by the Spanish Metrology Centre and appear in the official register), calibration certificates (annual recalibration is mandatory; expired certificates invalidate readings), measurement tolerance margins (typically 5-7% depending on the speed range), vehicle identification (photos must clearly identify the offending vehicle; poor image quality or obstructed plates create doubt), and section control calculations (average speed cameras must prove there was no stop or deviation within the measured section).
Defense Strategies
On that basis, we request the full maintenance and calibration log of the device, the homologation certificate and, where they exist, the recordings of the measurement. The decisive move is often arithmetic: applying the tolerance margin to the recorded speed can bring it below the criminal threshold, downgrading the offence to a mere administrative infraction. We also challenge the identification of the vehicle and the driver when the image does not allow an unequivocal attribution.
Section & Mobile Radars
Each radar type opens different lines of challenge. Fixed radars require a current homologation and verification certificate and the signage announcing them. Mobile radars (on a tripod or in a vehicle) carry a larger error margin and must be correctly positioned and operated by trained staff. Section (average-speed) radars must prove there was no stop or deviation within the measured stretch, since a pause distorts the average. Identifying which device produced the reading is the starting point for choosing the right technical objection.
Criminal Consequences
Speeding becomes a criminal offence under Art. 379.1 CP when the speed exceeds the limit by more than 80 km/h on interurban roads or 60 km/h in urban areas; below that threshold it is an administrative infraction. The criminal form carries prison of 3 to 6 months, a fine of 6 to 12 months or community service, and the deprivation of the right to drive of 1 to 4 years. This is why reducing the measured speed below the threshold —through the tolerance margin and the challenge to the measurement— is the central objective of the defence.
Speed-camera reliability: type approval, periodic verification and error margins
A conviction under Article 379.1 of the Criminal Code (driving 60 km/h over the limit in an urban area, or 80 km/h on an interurban road) rests entirely on a technical measurement. The first line of defence therefore does not dispute the conduct but the evidence: if the speed camera (cinemómetro) was not reliable, the recorded excess cannot sustain a conviction. State metrological control, developed by Royal Decree 244/2016 implementing the Metrology Law 32/2014, sets out three successive phases: conformity assessment (type approval of the model), periodic verification of the specific device, and verification after any repair or modification. The absence or expiry of any of these seriously weakens the evidential value of the result.
Periodic verification of speed cameras is carried out on an ordinary two-year cycle and includes checking the device's correct installation and adjustment. The defence should demand from the police report the verification certificate in force on the date of the events, the model approval certificate and, where applicable, the certificate of verification after the last repair. If the certificate is expired, missing or not produced despite being requested, the measurement loses its metrological cover. This is no mere formality: it is the guarantee that the figure in the report reflects a genuinely reliable speed and not a data point without technical backing.
How the error margin can place the excess below the criminal threshold
Every measuring instrument has a maximum permissible error that must be deducted from the recorded speed before comparing the result with the criminal threshold. The rule, which favours the driver, requires taking the lowest real speed compatible with the measurement. For speed cameras the correction is usually expressed as a percentage above a certain speed and as a fixed value below it, and it is larger when the device is mobile (installed in a moving vehicle) than when it is fixed or static. Applying that margin correctly is not a technicality: it is what separates the offence from a mere administrative infraction when the measurement sits at the edge of the threshold.
The practical effect is decisive. If, on an interurban road with a 120 km/h limit, the camera records 198 km/h, the apparent excess is 78 km/h, below the 80 required by the offence; once the margin is deducted, the corrected real speed may fall even further from the threshold, returning the case to the administrative track. The defence must verify that the report states the already-corrected speed and not the raw figure, identify whether the radar was fixed or mobile so as to apply the right margin, and confirm that the reference limit was the one actually in force on that stretch. An error on any of these points may exclude criminal liability.
Positioning, signposting and the chain of custody of the data
Beyond type approval, the reliability of the measurement depends on the real conditions in which it was obtained. The defence examines the correct positioning of the speed camera (angle to the carriageway, distance, absence of obstacles or reflections that distort the reading), the unequivocal identification of the measured vehicle when several travel close together, and the consistency between the photograph or frame and the data on speed, date, time and location. Prior signposting of checkpoints and the manufacturer's usage protocols are also relevant to rule out erroneous measurements or readings that cannot be attributed with certainty to the vehicle under investigation.
Traceability of the data is another route of scrutiny. The report should be cross-checked against the technical documentation of the operation, the training of the officer who operated the equipment, and the device's internal log. Where the camera produces a result but the supporting material allowing verification is not retained, or where there are discrepancies between the image and the metadata, the evidential force is undermined. The aim is not to presume anyone's bad faith, but to require that a criminal conviction, with all that it entails, rest on complete, reproducible evidence free from reasonable doubt as to its accuracy.
Criminal versus administrative boundary, licence ban, procedure and prescription
It is essential to separate the criminal offence from the administrative one. Excessive speed is, as a general rule, an infraction under the Traffic Law (consolidated text approved by Royal Legislative Decree 6/2015), penalised by the administration with a fine and points. Only when the excess reaches the thresholds of Article 379.1 of the Criminal Code does the conduct become an offence. Hence, when challenging the speed camera or applying the error margin places the corrected speed below 60 or 80 km/h over the limit, the reproach does not simply vanish: it may be redirected to the administrative sphere, but it falls outside the criminal process and its consequences.
Those consequences include, alongside the main penalty, deprivation of the right to drive motor vehicles and mopeds (Article 47 of the Criminal Code), which is served even where a non-custodial penalty is chosen. The usual channel is the fast-track trial (Articles 795 et seq. of the Criminal Procedure Act): the Investigating Court or the Duty Court instructs and the Criminal Court tries the case, with a plea of conformidad being common. It is advisable not to plead guilty before reviewing the reliability of the measurement. Finally, under Article 131 of the Criminal Code, because these are offences whose maximum penalty does not exceed five years, the limitation period is five years; there is no three-year bracket here.
Penalties & Consequences: Speed Camera Challenge
| Type / Scenario | Criminal Penalty |
|---|---|
| Speeding offence (Art. 379.1 CP) | Prison of 3-6 months, a fine of 6-12 months or community service, plus a driving ban of 1-4 years. |
| If the radar is excluded | Where the camera reading is the sole evidence and is annulled, the case is typically dismissed (acquittal). |
| Tolerance margin | The metrological margin (5-7%) can bring the real speed below the criminal threshold. |
* Penalties shown are indicative. The actual penalty depends on case circumstances, applicable mitigating and aggravating factors.
Defense Strategy: Speed Camera Challenge
Evidence Review
Comprehensive review of the prosecution evidence to detect procedural irregularities.
Negotiation
Limited plea agreement when the evidence is strong, to minimize consequences.
Road Safety Offences in Spain: DUI, Reckless Driving and Traffic Crimes — Defence Guide
Road safety offences (Arts. 379-385 CP) are among the most prosecuted in Spain. Driving under the influence (DUI), dangerous driving, unlicensed driving, and driving while disqualified carry not only prison sentences and fines, but also driving licence disqualification that can last up to 10 years.
Penalty Table: Road Safety Offences
| Offence | Article | Threshold | Penalty |
|---|---|---|---|
| DUI (alcohol) | Art. 379.2 | > 0.60 breath / 1.2 blood | 3-6 months prison or fine + 1-4 yr disqual. |
| DUI (drugs) | Art. 379.2 | Any detectable amount | 3-6 months prison or fine + 1-4 yr disqual. |
| Excessive speed | Art. 379.1 | +60 km/h urban / +80 km/h interurban over the limit | 3-6 months prison or fine + 1-4 yr disqual. |
| Reckless driving (Art. 380) | Art. 380 | Manifest disregard for life | 6 months – 2 years + 1-6 yr disqual. |
| Unlicensed driving (never held) | Art. 384 | No licence ever held | 3-6 months prison or fine |
| Driving while disqualified | Art. 384 | Lost by judicial/admin order | 3-6 months + 1-4 yr further disqual. |
| Hit and run (Art. 382 bis) | Art. 382 bis | Leaving accident scene | 6 months – 4 years |
Key Defence Strategies
Challenge the Breathalyser Result
Breathalyser devices must be calibrated and certified. Challenge: calibration records out of date, device malfunction, improper administration protocol (required 15-minute observation period before test).
Drug Test Challenge (Saliva/Blood)
Roadside saliva tests are presumptive, not conclusive. Request the blood confirmatory test. If the confirmatory test was not performed or the result is contested, the evidence may be insufficient.
Reckless Driving: subjectivising the risk
Art. 380 requires manifest, concrete endangerment of road users. Driving fast on an empty road at night may not constitute the 'manifest danger to life' required.
Disqualification Computation
If the accused drove believing the disqualification had expired (administrative error, incorrect notification), the subjective element of Art. 384 may be absent.
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