Successfully plans a round trip via ferry in one direction, unexpectedly fails to use correct ferry in the other direction.

Hi,

ABRP appears to have trouble reversing a round trip that includes a ferry. That is, after successfully planning a trip that needs only a one-way ferry trip, the reverse plan adds a lengthy, unnecessary, and undesirable detour to additional ferries.

This trip,

https://abetterrouteplanner.com/?plan_uuid=589069b2-053d-4a11-b6d3-ed90ae1dbed6 , crosses exactly one ferry in one direction only and is is successfully planned when travelling in the clockwise direction, but when the plan is reversed, ABRP adds a long and unnecessary detour that includes two additional ferries. This routing mistake is made regardless of whether the EV has short range (<100mi) or long range (>200mi), so the distance between charging stops does not appear to be the root cause.

Clockwise waypoints (successful plan):

  1. Lynnwood, Washington

  2. Mukilteo-Clinton Ferry (from Mukilteo to Clinton, one way)

  3. Coupeville, Washington

  4. Deception Pass Bridge, Washington

  5. Lynnwood, Washington

Reversing this clockwise plan should have only needed to reverse the sequence of the clockwise plan. Instead, the reverse plan contains a lengthy detour and two extra ferries.

Counter-clockwise plan (undesirable):

  1. Lynnwood, Washington

  2. Deception Pass Bridge, Washington

  3. Coupeville, Washington

  4. Mukilteo-Clinton Ferry

  5. Mukilteo-Clinton Ferry again? ← why did ABRP recommend a round trip?

  6. Clinton to Port Townsend ← undesired detour

  7. Port Townsend-Coupeville Ferry, one way ← undesired detour

  8. Edmonds-Kingston Ferry, one way ← undesired detour

  9. Lynnwood, Washington

For the counter-clockwise route, ABRP should have only needed a one-way ferry crossing from Clinton to Mukilteo at Step #4 and the last leg, Step #5, should have been Mukilteo to Lynnwood.

Please authenticate to join the conversation.

Upvoters
Status

Completed

Board

📥 Feedback

ETA
Apr 13, 2025
Date

About 1 year ago

Author

M Johnson

Subscribe to post

Get notified by email when there are changes.