Home > Services > Signaling and Train Control
Advanced Civil Speed Enforcement System (ACSES)
Client: National Railroad Passenger Corporation
Location: New Haven, CT to Boston, MA
Value: $10 Million (Construction)
The existing mainline of Amtrak from New Haven, CT to Boston,
MA is approximately 154 route miles in length. The line is entirely
double tracked with an occasional third and/or fourth track.
Current operating speeds, controlled by a Continuous Cab Signal
System, are as high as 110 miles per hour.
The ACSES system is composed of two subsystems: wayside and
on-board. The wayside system is comprised of a microprocessor
based transponder system which provides for the enforcement of
permanent civil speed restrictions (curves, bridges, etc.) and
temporary speed restrictions (slow orders) and an MCP (data)
radio system for enforcement of stop signal aspects for home
signals. The on-board system is comprised of a microprocessor
computer, antenna, transmitter/receiver, axle generator, brake
and propulsion interface, and an MCP (data) radio.
The ACSES system, in conjunction with the nine aspect wayside
signal system and the Continuous On-Board Cab Signal system,
will permit operating speeds up to 150 miles per hour for trains
upgraded to take advantage of this speed.
Our firm provided engineering services for the editing and development
of the ACSES system specification. These services also included
the conceptual, preliminary, and final design for wayside signal
and communications systems; review and approval of third party
designs, and submissions.
- Wayside Location Design
- Review of Third Party Design
- Approval of Third Party Submissions.
- 150 MPH Speed Upgrade
- Microprocessor Based Transponder System
- MPC Radio System.