I'm not sure what lane splitting is. I am going to assume you mean driving in two lanes, and No it is not legal. I live in TX. It is called lane sharing, and it is legal in California when there is more than one lane in each direction.
An ITIN, or Individual Taxpayer Identification Number, is a tax processing number only available for certain nonresident and resident aliens, their spouses, and dependents who cannot get a Social Security Number (SSN). It is a 9-digit number, beginning with the number 9, formatted like an SSN (NNN-NN-NNNN).
In the United States, Tax ID numbers are of 3 different types; the Social Security Number (SSN), Individual Taxpayer Identification Number (ITIN) and Employer Identification Number (EIN). Among these 3 tax ID numbers, ITIN numbers are required for illegal immigrants or dependents of the principal investors.