For existing crossings, the safety assessment team has the
responsibility of confirming/verifying the design standards
during the site visit. The technical standards are contained in
RTD 10, the TAC Geometric Design Guide for Canadian Roads and
the TAC Manual of Uniform Traffic Control Devices for Canada. It
should be noted that certain technical standards may be
“grandfathered” or may be delayed “coming into force” (CIF).
Sections 24, 25 and 26 of the Grade Crossing Regulations specify
the requirements regarding applicable enforcement dates. The
following design standards should be confirmed and applied
uniformly by the railway company and the road authority. In
selecting the design vehicle, consideration should be given to
vehicles that are expected to routinely use the grade crossing.
It is not practical to design each grade crossing for all road
vehicles. It is very important that the design vehicle be
established at the beginning of the detailed grade crossing
safety assessment. Table 4-3 in RTD 10 may b