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Evo ACM: Selecting the right controller.

Selecting the right combination of Evo ACM controllers is key to a optimised signal fleet. This guide explains the different controllers and their applications.

Summary

Use this guide to match an Evo ACM controller to the number and type of phases required. Final system design and deployment must be completed by trained personnel in line with current traffic-signalling guidance. 

Controller

Image

Typical role

Capacity / distinguishing feature

Evo ACM T2

Evo T2 ACM

Master or signal controller

Master for a two-vehicle-phase installation only; more commonly used as a vehicle or pedestrian signal controller in a larger Evo ACM system.

Evo ACM T5

Evo T5 ACM

Vehicle-only master or signal controller

Provides up to 5 vehicle phases without pedestrian-crossing functions.

Evo ACM PT5

Evo PT5 ACM

Main multi-phase controller

Up to five vehicle phases and up to four pedestrian crossings. This is the most common form of master controller as it provides both traffic and pedestrian capabilities.

Evo ACM PT9

Evo ACM PT9

Headless master

Complex installations with up to nine vehicle phases and up to eight pedestrian crossings. This controller is provided in a separate base without a signal head.

Evo ACM UTC

Evo UTC ACM

Headless UTC master

Connects to a Highway Authority UTC network, allowing for 3rd party control. This is available on-hire only.

Notes:

  • Controllers use Active Channel Management (ACM) to monitor radio-channel quality and occupancy and change channel automatically when necessary.

  • Vehicle detection uses AGD308 FMCW radar.

  • The stated operating range is 5-500 m, subject to line of sight and local conditions.

  • A complete system can support up to nine traffic phases (18 vehicle heads) and eight pedestrian crossings (16 pedestrian heads), when configured with the appropriate master (PT9).

  • Older XL2 and Evo Multi signal controllers are not compatible with Evo ACM equipment.

  • Evo ACM controllers are not compatible with older Evo Multi and XL2 signal equipment.

Before selecting equipment

Confirm the junction layout, number of vehicle approaches, whether dual heads are required, number of pedestrian crossings, master-controller location, line of sight, and applicable authority approval. The manual's junction examples are rough guidance only.

Maximising Utilisation & Efficiency

Ensure you have a suitable number of capable controllers to meet your business demands. We recommend to have at least 1x PT5 contoller per 3x T2 controllers. By having enough multi-phase and pedestrian crossing capable controllers, you can ensure you are equipped to deliver a wide range of works.

For more efficiency depot operations, it may be worthwhile to clearly mark which signal assets hold PT5/T5 controllers.