For a second-order, class II geodetic control network, station spacing in traverse should not be less than:

• A. 1.50 km
• B. 2.00 km
• C. 2.50 km
• D. 3.00 km

Answer: (B)

In a traverse design, how far apart stations are directly shapes the network’s geometry and how errors propagate through the adjustment. For a second-order, class II geodetic control network, you want the lines to have enough angular leverage without becoming so short that the geometry turns cramped or ill-conditioned. If stations are placed closer than about two kilometers, the included angles between successive legs become small and the network can become near-linear, making the solution very sensitive to even tiny angular or sighting biases and inflating coordinate uncertainties. The two-kilometer spacing provides a practical balance: long enough to avoid near-degenerate geometry and to keep line-length errors in check, yet short enough to maintain good redundancy and a stable, well-conditioned adjustment that meets the prescribed accuracy.