Because you asked.
ARTICLE 5
Section 1. Seniority
(d) For full-time employees there shall be
two seniority lists, “local
cartage” and “over-the-road.” There shall also be a separate “casual
local cartage” seniority list. Employees in the following classifications
shall be included on the local cartage seniority list: all truck
drivers, helpers, dock workers, jockeys, and such other employees
as may be presently or hereafter represented by the Union, engaged
in local pickup, delivery, and assembling of freight. The “over-the road”
seniority list shall include all over-the-road drivers whose primary
job is to transport freight between the Employer’s facilities.
(e) The Company shall offer extra city or dock work to road
employees who are on layoff and who are qualified and immediately
available for city or dock work prior to using casual employees,
except where there is a mutually agreed procedure to the contrary.
No road employee shall gain “local cartage” seniority under this
provision, but he/she shall accrue Company seniority.
The answer is no... If you are a laid off road driver then you must stay in your job classification. You can ask to go P&D but... you will start at the bottom of the seniority list for that job classification. Your "Company" seniority only applies to "Company" layoff.