The Los Angeles-San Diego-San Luis Obispo Rail Corridor Agency  (LOSSAN) is a joint powers consisting of various rail operating agencies and stakeholders who (as stated in their outreach material) seek to increase ridership, revenue, capacity, reliability, and safety on the coastal rail corridor from San Diego to Los Angeles to San Luis Obispo served by Amtrak’s Pacific Surfliner  along with the Coaster  and Metrolink .
In the past year or so they have been engaged in what they call “quick”  improvements. The most recent manifestation of this is the just posted LOSSAN Corridor Joint Timetable  with maps and schedule information for the aforementioned coastal corridor trains.
Danny Veeh of the San Diego Association of Governments (SANDAG) described the Timetable’s development at the
July 16 LOSSAN Board meeting  (see pp.9-10) thusly:
[North County Transit District] provided the lead design work on the joint timetable and it has been through a number of revisions based on comments from the LOSSAN Technical Advisory Committee (TAC) and joint agency marketing group. Due to significant logistical issues and high costs with a printed timetable, efforts shifted to produce an electronic timetable that could be downloaded and printed at home by the public on the websites of each operator. The size was specifically designed to fit on legal-size paper but it is
still legible on letter-size paper. Mr. Veeh summarized the features of the joint timetable pointing to the unique color for each rail service, the red arrows that show connecting trains, and the list of local transit connections at each LOSSAN station.
LOSSAN BTW has also prepared a brochure on Union Station , printed copies of which I have seen but I’m unsure how much exposure it has gotten.