Road Traffic Law and Enforcement
Road traffic law is high-volume and technically detailed. A sergeant must know the core offences, the evidence requirements for each, and the procedural steps that make a prosecution succeed - particularly for drink and drug driving, where timing and documentation are decisive.
Concepts to master
- Offences: careless and dangerous driving, speeding, insurance and licence offences, seatbelt and mobile phone offences.
- Intoxication offences: preliminary tests, evidential specimens, the statutory time limits, and the requirement to inform of the right to a specimen.
- Fixed charge notices and the circumstances in which prosecution follows non-payment.
- Seizure of vehicles and disqualification.
- The importance of the statement of evidence and continuity of breath or blood samples.
Traps
- Missing a statutory time limit, which defeats the prosecution.
- Failing to record the required warnings and the member's observations.
- Assuming a fixed charge precludes prosecution.
Rule of thumb
Apply the TIME check: Timing (statutory limits met), Information (rights and warnings given), Measurement (calibrated device, correct procedure), Evidence (continuity and statement). Worked example: in a drink-driving case, the sergeant must confirm the preliminary test was lawfully required, the evidential procedure followed, the time recorded, and the sample's continuity preserved.