How many orange and white reflective stripes are required on drums?

The correct requirement for the number of orange and white reflective stripes on drums is that there should be two orange and two white stripes. This configuration is essential for enhancing visibility and safety in work zones. The contrasting colors help ensure that the drums stand out against various backgrounds, especially in low-light conditions or adverse weather.

Stripes serve to improve the recognition of the drums both during the day and at night, promoting safer navigation for both vehicles and pedestrians. Having two of each color allows for better alignment and visibility from multiple angles, making it easier for drivers to identify and respond to work zones appropriately. This guideline is aligned with safety standards aimed at reducing accidents and enhancing worker and motorist safety in construction and maintenance areas.

The other options, involving a lesser or greater number of stripes, do not meet the standards set forth for high visibility in work zones. Proper reflective marking is critical in managing traffic and ensuring that drivers are adequately warned about potential hazards ahead.