proposed amendment to certain regulations made under the motor vehicle safety act 20 pages available in english and french over the past two decades the average size of children has increased but the safety standards for built-in child seats have not kept pace. recognizing this change the united states has recently revised its requirements for child seats to account for heavier children in order to improve safety. this proposal would more closely align canadian requirements for built-in restraint systems and built-in booster seats with those of the united states with regard to both performance requirements and testing protocols. close alignment of regulations would reduce costs to manufacturers who can then pass on savings to canadian consumers. in addition this proposed amendment would align the requirements for built-in child seats with recently proposed amendments for removable child seats. the proposed amendment introduce the following changes with respect to the current regulations motor vehicle safety regulations the amendment seeks to update the canadian safety standard governing built-in restraint systems and built-in booster seats as much as possible aligning the canadian requirements more closely with those of the united states and maximizing flexibility in testing. booster cushions and structure of regulations the canadian regulations have always used the expression booster cushions in reference to seats used by children to allow them to safely use seat belts. as this term has caused confusion in the past and with a view to aligning terminology with that of the motor vehicle restraint systems and booster seats safety regulations it is proposed that booster cushion be replaced with the more common expression booster seat. this would affect the title of the following two motor vehicle safety standards standard no. 210.2 lower universal anchorage systems for restraint systems and booster cushions and standard no. 213.4 built-in restraint systems and built-in booster cushions which would respectively become lower universal anchorage systems for restraint systems and booster seats and built-in child restraint systems and built-in booster seats. it is also proposed that the title of standard no. 210.1 become user-ready tether anchorages for restraint systems and booster seats. this proposal would have the effect of restructuring the regulations in order to clarify the intention behind certain requirements by adopting new definitions rewriting certain parts of the text replacing certain words adding clarifications and correcting reference errors. motor vehicle restraint systems and booster seats safety regulations a new formulation is proposed for the booster seat quasi-static test in the motor vehicle restraint systems and booster seats safety regulations. the test procedure and the apparatus would now be described in test method 213.2. note the departments intention to update the child seat regulations has been part of its regulatory plan since december 2006. an important portion of the new regulations pertaining to child seats designed for larger children has been in effect in canada since may 2007 by means of successive interim orders notified under g tbt n can 199 199 rev.1 199 rev.1 add.1 199 rev.2 199 rev.2 add.1 and 199 rev.2 add.2 . an interim order allows the department to temporarily align its requirements with those of another country in this case the united states. these interim orders have given canadians access to child restraint products accommodating heavier children which were previously prohibited in canada.