Picture of a brown recluse spider. Note the violin pattern on the cephalothorax and light-colored hairless abdomen. Picture of a brown recluse spider. Picture of a brown recluse spider head close-up. Generalized symptoms of bites from black widow and brown recluse spiders may include: 1  fever,  nausea,
Standard Mileage Rate Law and Legal Definition. The standard mileage rate (SMR), also known as mileage per diem, is the amount per mile that the Internal Revenue Service (IRS) allows small businesses and self-employed persons to use to calculate their vehicle expenses for tax deduction purposes.
In addition to standard Lodging and M&IE Per Diem, you may also receive reimburse for travel in a Personally Owned Vehicle (POV) for authorized business purposes.) Standard Mileage Rate is used for travel in a Personally Owned Automobile (POA) when a government owned vehicle is not available or not in the government's best interest. You may drive no more than 400 miles a day.