N.J. Admin. Code § 16:47-4.21

Current through Register Vol. 56, No. 19, October 7, 2024

Section 16:47-4.21 - Traffic signals

(a) Traffic signals may be approved by the Office of Traffic Signal and Safety Engineering, during the application process. When a study is required for a potential traffic signal, the study shall be completed and sealed by a New Jersey licensed professional engineer and shall include:

1. Consideration of all access that is existing and approved future access locations as well as advertised roadway and traffic signal improvements, for a distance of at least one traffic signal spacing standard in each direction;

2. Substantiation that a traffic signal is warranted by criterion listed in the current "Manual on Uniform Traffic Control Device for Streets and Highways";

3. Evaluation of current data assuming approved applications are in place based on their estimated build-out years;

4. Use of current and predicted travel speed, travel time, and delay time;

5. Documentation that the location of the potential traffic signal is consistent with 16:47-3.4;

6. Progression study using a cycle length of between 90 and 120 seconds or as determined by the Office of Traffic Signal and Safety Engineering;

7. Peak-hour operation speed obtained from the Office of Traffic Signal and Safety Engineering;

8. Use of the applicable minimum highway band width as stated in 16:47-3.4. The Office of Traffic Signal and Safety Engineering may allow a 30 percent minimum highway band width when existing band width for traffic signals on either side of the proposed traffic signal are at or below 30 percent;

9. Use of the applicable minimum highway band width as stated in 16:47-3.4 or 40 percent minimum highway band width, whichever is more restrictive, if the traffic signal is proposed at the new access point;

10. Use of the green time, in seconds, shall accommodate pedestrian movement;

11. Use of trip generation estimates based on the Institute of Transportation Engineers publication entitled "Trip Generation, 6th Edition," 1997 or superseding edition, or superseding rates adopted by the Department;

12. Information, data, and reference sources shall be documented;

13. Evaluation of the level of service and delays for all traffic movements;

14. Accurate and legible diagrams;

15. Documentation of all assumptions and adjustment factors;

16. Comparative analysis of all available alternatives including a no-build alternative;

17. A summary analysis that clearly indicates when level of service and delay standards are or are not met;

18. Safety analysis, including the interaction of adjacent conflict points and movements;

19. A conceptual design showing all geometric elements and dimensions with a detailed explanation of any elements that may need a waiver; and

20. Any additional supporting information and analyses, including waivers, if applicable.

(b) The construction of an access point at or near a signalized intersection usually necessitates the installation of additional traffic signal equipment. The Department shall review the application proposing additional equipment and shall determine whether the additional facilities are adequate. All equipment shall be installed in accordance with "Standard Specifications for Road and Bridge Construction" under Department supervision. At the request of the permittee, the Department may agree to perform the traffic signal modification. The traffic signal modification work and all electrical equipment will be at the permittee's expense.

(c) When the Office of Traffic Signal and Safety Engineering approves a traffic signal, it will prepare a cost-sharing agreement that shall be independent of any developer agreement, but shall be a condition of the permit. The traffic signal agreement will provide for the participation of the applicant and the Department in the cost of installation, maintenance, and operation of any proposed traffic signals.

(d) All traffic striping plans and traffic signal plans shall be at a scale of one inch equals 30 feet (1=300 for metric). Plan sheet size shall not exceed 24 inches (594 millimeters) by 36 inches (841 millimeters). Traffic signal designs shall be submitted in accordance with "Manual on Uniform Traffic Control Devices for Streets and Highways" requirements.

N.J. Admin. Code § 16:47-4.21