13. The expert of GTB presented an amendment proposal to the Consolidated Resolution on the common specification of light source categories (R.E.5) that introduced new light emitting diode (LED) substitute light source categories C5W/LEDK and R5W/LED (ECE/TRANS/WP.29/GRE/2019/9 and GRE-81-03). The expert of GTB also tabled another proposal that introduced new LED substitute light source categories W5W/LEDK and WY5W/LED (ECE/TRANS/WP.29/GRE/2019/10 and GRE-81-04). The expert from IEC highlighted the interlock solutions for the new categories (GRE-81-07). GRE adopted both proposals and requested the secretariat to submit them to WP.29 and the Administrative Committee (AC.1) for consideration at their November 2019 sessions as draft amendment 4 to R.E.5.