"accident reduction" is a correct and usable phrase in written English.
It refers to the act of decreasing or minimizing the number of accidents that occur in a given situation or setting. You can use the phrase "accident reduction" in a variety of situations, such as in workplace safety policies, traffic safety campaigns, or in discussions about safety measures in a specific industry or community. Example: "The new safety measures implemented by the construction company have resulted in a significant accident reduction on their job sites."
From the point of view of accident reduction, the answer is entirely clear.
Attention should be paid to the initial design phase, because of its greater impact on accident reduction.
It cannot be claimed, however, that the entire accident reduction was attributable to the environmental speed limits exclusively.
Detection of a wall thickness change in pipelines is extremely important to avoid unwanted leakages and accident reduction in industrial structures.
Analysis of the effects of the use of data recorders in these fleets resulted in an average estimated accident reduction of some 20%.
These analyses suggest positive associations between accident reduction and the use of personal communication or roadside media as part of a campaign delivery strategy.
While larger percentage accident reductions are achieved per 1 mph speed reduction on lower speed roads, larger speed reductions and larger overall percentage accident reductions are obtained on roads with higher before mean speeds.
Yet large-scale deployment of a system that could deliver huge accident reductions is still by no means guaranteed.
Campaigns with a drink-driving theme were also associated with greater accident reductions, while some of the analyses suggested that accompanying enforcement and short campaign duration (less than one month) are beneficial.
The analysis developed in this paper appears to be useful for many applications such as the estimation of accident reductions due to improvement in existing tunnels and/or to modifications of traffic control systems, as well as for the prediction of accidents when different tunnel design options are compared.
Table 5 presents the infrastructure improvements which were associated with significant accident reductions following the treatment.
