Below are four standard traffic warning sign descriptions and four driver hazard meanings. Pair each warning sign visual description with its corresponding hazard meaning and required driver precaution.
- Yellow diamond sign displaying two parallel lines that curve inward toward the middleWarns of a narrow bridge ahead; drivers should slow down and prepare for reduced roadway width.
- Yellow diamond sign displaying a truck descending an inclined slopeWarns of a steep downgrade ahead; drivers should check their brakes and downshift to control speed.
- Yellow circular sign featuring a prominent black 'X' flanked by two 'R' lettersWarns of an upcoming highway-rail grade crossing; drivers must look, listen, and prepare to yield or stop.
- Yellow diamond sign displaying an entering roadway arrow alongside a main lane arrow, separated by a dividing line showing no merge is requiredWarns of an entering traffic lane that does not merge; drivers should stay in their lane without stopping unnecessarily.
Answer
1. Yellow diamond with inward-curving lines matches Narrow Bridge ahead. 2. Yellow diamond with a descending truck matches Steep Downgrade ahead. 3. Circular yellow sign with 'X' and 'RR' matches Railroad Advance Warning. 4. Yellow diamond with separate parallel arrows matches Added Lane ahead.
Each pair correctly matches the standard MUTCD symbol description with its regulatory meaning and safe driving response: inward lines indicate a narrow bridge, a descending vehicle indicates a steep grade requiring lower gears, the circular 'RR' sign alerts drivers to an upcoming railroad crossing, and parallel arrows without an intersection line indicate an added lane.
Step-by-Step Solution
Key Concept
Identifying standard warning sign symbols, colors, shapes, and their associated driver precautions