 |
  |
| Guideline | Island Traffic Signal Guideline 1 |
| Title | ITS Signal Size |
| Text | Subject to other unique toll plaza considerations, the ITS should consist of 8 inch diameter, LED traffic signal heads. |
| Commentary | None |
| Guideline | Island Traffic Signal Guideline 2 |
| Title | ITS Location |
| Text | The ITS should be installed approximately 15 feet beyond the downstream edge of the presence or arming loop. |
| Commentary | This location assumes 15 feet represents the detection length of a typical vehicle, the installation of a presence loop at the collection point, and there are no physical constraints to this location. Otherwise, alternative locations should be considered and field tested. |
| Guideline | Island Traffic Signal Guideline 3 |
| Title | ITS Horizontal Clearance |
| Text | A horizontal clearance of 12 inches should be used from the face of the toll island or raised barrier to the nearest edge of the ITS signal head. |
| Commentary | None |
| Guideline | Island Traffic Signal Guideline 4 |
| Title | ITS Height |
| Text | Subject to the known or forecasted traffic mix, the height to the bottom of all ITS should be in the range of 4 to 5 feet. |
| Commentary | None |
Table of Contents | List of Tables | List of Figures | Previous Section | Next Section | HOME
