Traffic Safety Bureau

Responsibilities
The Traffic Safety Bureau is responsible for investigating all serious and fatal motor vehicle accidents. In addition, they maintain computerized traffic and speed counts on borough roadways and work in conjunction with borough officials on problem areas within the community.  
 
The Traffic Safety Bureau also maintains, trains and supervises all school crossing guards, coordination with construction companies on all borough construction projects and handling any traffic related complaints within the Borough.

Programs 
The Traffic Safety Bureau conducts child safety seat inspections, educational programs which focus on topics such as drunk driving and distracted driving, 
Traffic_Logo
Traffic Studies
When the Traffic Safety Bureau receives a speeding complaint, typically the first step in the resolution of the complaint is to conduct a traffic study.  While the anecdotal experiences of residents are important, the data in the traffic study is the main driver in how to respond in an effective and efficient manner.   Traffic studies provide the following vital information:

  • 85th Percentile Speed (the speed at or below 85% of vehicles travel)
  • Vehicle Count
  • Most Effective Times for Enforcement
  • To request a traffic study contact a member of the Traffic Safety Bureau.
Lt. Carey Radar
Black and White Traffic Officer and Patrol Car
Traffic studies are conducted over the course of seven days
Street                     
Speed Limit
85th Percentile
Speed
Vehicle Count
Date of Study
 
Central Ave / Fairview Ave
35 mph
34 mph
18,689
2013-Aug.
Central Ave / Fairview Ave
35 mph
34 mph
18,988
2013-Oct.
Central Ave / Serpico Way
35 mph
37 mph
16,935
2014-Aug.
Central Ave / Westerly Ave
35 mph
33 mph
18,313
2014-Sept.
Central Ave / Westerly Ave
35 mph
34 mph
18,618
2014- Oct.
Central Ave / Serpico Way
35 mph
33 mph
16,935
2013-May
Lathrop Ave / Sunset Pl
25 mph
24 mph
330
2015- Nov.
Longview Ave / Rosedale Ave
25 mph
23 mph
1,200
2013-June
Maple Ave / Kings Rd
25 mph
25 mph
1,747
2015-Dec.
Morris Pl / Wisteria Ct
25 mph
33 mph
6,261
2013-May
Niles Ave / Pine Tree Terr
25 mph
28 mph
5,592
2014- Sept.
Noe Ave / Crestview Ave
25 mph
35 mph
17,029
2014-July
North St / Myrtle Ave
25 mph
32 mph
4,595
2015-July
Park Ave / Anthony Dr
35 mph
39 mph
71,145
2013- Jan.
Park Ave / Cedar Ave
35 mph
42 mph
61,998
2013-Jan.
Prospect St / Belmont Ave
25 mph
33 mph
33,296
2013- Dec.
Ridgedale Ave / Myrtle Ave
30 mph
35 mph
38,891
2013-March
Vinton Rd / Wilson La
25 mph
32 mph
3,095
2015-May
                                                            


 

• What does the 85th percentile speed mean?

The 85th percentile speed is the speed at or below 85 percent of vehicles travel.

Another way of looking at this is that only 15 percent of vehicles go faster than this speed and 85 percent go at or below this speed. According to a Federal Highway Administration study, all states and most local agencies use the 85th percentile speed of free flowing traffic as the basic factor in establishing speed limits.

• Why is the 85th percentile speed a good basis for the speed limit?

Studies have shown crash rates are lowest at around the 85th percentile speed. Drivers traveling significantly faster OR slower than this speed are at a greater risk for being in a crash. It is not high speeds alone that relate to crash risk; it is the variation of speed within the traffic stream.

• Would lowering the speed limit affect the speed of vehicles?

A change in the speed limit almost always changes the mean speed of traffic. However, the changes are not always proportional. For the most part, the change in the mean speed of traffic created by a change in speed limit is around 25 percent of the change in the speed limit.  In other words, a speed limit increase or reduction of 6 mph (10 km/h) yields about a 1.5 mph (2.5 km/h) raising or lowering of the mean speed, respectively.

References: R. Elvik, P. Christensen, and A. Amundsen, "Speed and Road Accidents: An Evaluation of the Power Model," The Institute of Transport Economics (TOI), TOI Report 740/2004 (December 2004).

Federal Highway Administration (FHWA), Methods and Practices for Setting Speed Limits: An Informational Report

Contact Us
If you have questions, please contact a member of the Traffic Safety.