Prepare and cook the noodles as stated on the package directions then set aside for later.
Meanwhile, combine the soy sauce, and sriracha in a bowl and whisk.
Heat a large skillet or wok with the oil over medium to high heat. Cook the onion until transparent for about 7 minutes, then add garlic and stir. Continue to add the broccoli, carrot, and bell pepper and stir fry until vegetables are crisp tender.
Add the tomatoes, drained noodles, and sauce. Stir fry until the sauce is soaked into the dish for about 2 to 3 minutes. Sprinkle the cilantro and lime juice over the noodles then plate. Enjoy!