Answer :
Final answer:
Speed adjustments according to the IPDE strategy should be based on objects in the path of travel, road conditions, and environmental conditions, including the impact of weather on stopping distances and visibility. so , correct option is b) Objects in path of travel, road conditions, and environmental conditions.
Explanation:
According to the IPDE (Identify, Predict, Decide, Execute) strategy, speed adjustments should be based on objects in the path of travel, road conditions, and environmental conditions. These factors can significantly affect a driver's ability to maintain control and stop the vehicle if necessary. Weather conditions such as rain, fog, or snow can reduce visibility and increase braking distances, especially on wet concrete compared to dry concrete. Also, objects in the path of travel require a driver to predict potential hazards and execute necessary speed adjustments to avoid collisions.
Additionally, traffic engineers are concerned with the selection of proper “yellow time” at traffic signals to ensure safe passage through stoplights, which is an essential consideration for drivers when adjusting speed around intersections.