5. PROGRAM EVALUATION (continued)

5.3.3 Speed Results

The segment of Moon Valley Drive running north and south received essentially the same education and enforcement as the east/west segment but also had two speed humps installed between Waves 4 and 5. The speed limit on this segment is also 25 mph.

The results shown in Table 67 and Figure 15 indicate that the effect of education and enforcement alone on speed on this roadway through Wave 4, although significant, is somewhat less than on the east/west segment of Moon Valley Drive . The influence of the addition of a speed hump before Wave 5 is large and consistent with what was seen on 84 th Avenue in Peoria .

As with the East/West segment on Moon Valley and at Sweetwater, there is a slight reduction in the overall vehicle count between Wave 1 and Waves 4 and 5. The magnitude of this drop (484) from Wave 1 to Wave 4 could possibly account for the reduction of 468 in the number of cars observed going 7+ over the limit across these waves if all the diversions were speeders. The overall reduction in vehicles from Wave 1 to Wave 5 (518), however, cannot explain the extremely large drop in those going 7+ over the limit across those time periods (1,398).

Table 67. Phoenix – Moon Valley Drive North/South Segment Speed Results

Figure 15. Speed Classes on Phoenix – Moon Valley Drive North/South Segment