UltraLyte LR B Operating Manual Analysis

UltraLyte LR B Operating Manual Analysis

Laser Technology Inc. Technical Documentation
Equipment Manual for Police Speed Detection Device

Background

This is the official user's manual for the UltraLyte LR B laser speed detection device manufactured by Laser Technology Inc. The device is a handheld laser speed gun used by police to measure vehicle speeds using infrared laser technology. The manual details operational procedures, technical specifications, and known limitations of the equipment commonly used in Ontario speed enforcement.

Issues

1. What are the technical limitations and operational requirements that could affect the accuracy of speed measurements?

Technical Vulnerabilities

The manual reveals several critical operational factors: the cosine effect reduces measured speeds when the angle between the device and target increases (with specific reduction tables provided); jamming from headlights or other laser devices can cause measurement errors; the weather filter must be activated in adverse conditions, changing minimum range requirements from 50 feet to 250 feet; scope alignment procedures are required and can be disrupted by impacts; and the device requires specific positioning within 10 feet of the roadway per 100 feet of target distance to maintain accuracy.

Key Takeaway

Technical documentation can reveal grounds to challenge laser speed measurements.

Defendants should examine whether proper procedures were followed, including weather conditions, positioning requirements, scope alignment, and potential interference sources. The cosine effect tables show significant speed reductions at angles, and the manual's error codes and jamming indicators suggest multiple ways measurements can be compromised.