Traverse adjustment method selection If angular (direction) measurements in a traverse are significantly more precise than the linear (distance) measurements, which adjustment rule should be used to balance the traverse?

Introduction / Context:
Traverse balancing distributes the linear misclosure among the traverse sides according to the relative reliability of angular and linear observations. Choosing the appropriate rule improves positional accuracy of adjusted coordinates. This question checks your ability to match data quality to the correct adjustment rule.

Given Data / Assumptions:

• Angles are highly precise compared to distances.
• Linear misclosure exists due to distance errors.
• Objective is to balance departures and latitudes appropriately.

Concept / Approach:

Bowditch’s rule distributes corrections in proportion to the lengths of the sides under the assumption that angular and linear errors are of the same order. The transit rule, however, assumes that angular observations are significantly more precise; it distributes the corrections to departures and latitudes in proportion to the respective coordinates (latitude or departure) of each side, thus preserving observed directions more faithfully. Therefore, with superior angular precision, the transit rule is preferred.

Step-by-Step Solution:

Verification / Alternative check:

Surveying texts recommend Bowditch when angular and linear errors are comparable, and transit when angular precision dominates. Field practice mirrors this guidance.

Why Other Options Are Wrong:

Bowditch is less appropriate under the stated precision imbalance. Empirical methods lack a firm statistical basis. “All” and “no balancing” contradict good practice.

Common Pitfalls:

Using Bowditch reflexively without checking measurement quality; misunderstanding how transit rule preserves direction.

Final Answer:

Transit rule