On roadways, confirmatory (reassurance) route markers are generally installed at which location relative to a crossing or intersection, considering standard traffic engineering practice?

Introduction / Context:
Road traffic signing uses different categories of signs: advance direction signs (before a junction), direction signs (at the junction), and confirmatory or reassurance markers (after a junction). The correct placement ensures that drivers know they are on the intended route immediately after negotiating an intersection.

Given Data / Assumptions:

• Left-hand traffic as in India; the primary shoulder/kerb side is the left.
• Standard practice for location of confirmatory route markers following a decision point.

Concept / Approach:
Confirmatory markers are not used to guide the turn; they reassure the driver that the route chosen is correct. Therefore, they are placed downstream of the junction on the correct carriageway side to be readily visible to through drivers.

Step-by-Step Solution:

Verification / Alternative check:
Review of typical sign sequences on arterial roads shows confirmatory signs sited after intersections to avoid ambiguity and minimize clutter before the junction.

Why Other Options Are Wrong:
Before the crossing options are for advance direction signs; right-side placement conflicts with normal sign-side conventions in left-hand traffic; placing the sign inside the intersection is unsafe and nonstandard.

Common Pitfalls:
Confusing confirmatory markers with direction signs; placing too early so it is misread as a turning instruction.

Final Answer:
After the crossing on the left side